CN107886807A - A kind of efficiently English single choice test items learning device - Google Patents
A kind of efficiently English single choice test items learning device Download PDFInfo
- Publication number
- CN107886807A CN107886807A CN201810045947.2A CN201810045947A CN107886807A CN 107886807 A CN107886807 A CN 107886807A CN 201810045947 A CN201810045947 A CN 201810045947A CN 107886807 A CN107886807 A CN 107886807A
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- option
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- magnet
- rectangular cylinder
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- 238000000926 separation method Methods 0.000 claims 1
- 238000005194 fractionation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B19/00—Teaching not covered by other main groups of this subclass
- G09B19/06—Foreign languages
Abstract
A kind of efficiently English single choice test items learning device, is related to a kind of English study device.Rectangular cylinder bottom is arranged with bottom, multiple topic plates are stacked with middle rectangular cylinder, the topic plate supported underneath of bottom has stage clip, the topic board of the top is located at below two bar shaped clamps of rectangular cylinder of centre, and it can be slid into by gap in the rectangular cylinder of both sides, it is topic viewing area to inscribe plate first half, it is latter half of to be option viewing area and be provided with round recessed, round recessed center is provided with circular hole, rotating shaft bar is rotatablely connected with circular hole, option disk and rotating shaft bar upper end are affixed, option disk is embedded with multiple option displaying blocks, rotating shaft bar lower end is fixed with gear, topic plate is fixed with spur rack, engaged among gear and spur rack per two neighbouring topic plates, the display lamp unlatching when answering pen lower end contacts with option displaying block corresponding to the correct option of any topic plate.Show and choose whether as correct option, and option displaying block evolution can be made.
Description
Technical field
The present invention relates to a kind of English study device, especially a kind of efficiently English single choice test items learning device.
Background technology
English is a branch of instruction in school that contemporary student has to learn well, is to walk to go abroad as the most popular language in the world
The primary demand that door meets the needs of the world.
At present, in English written examination study, single choice test items occupy enormous proportions, because topic is shorter, do topic quickly,
Student can be made to recognize faster insufficient existing for oneself English Grammar knowledge point, usually English study is used as by numerous students
When the most commonly used mode of learning.
However, current single choice test items are printed on books, student will also search answer one by one when inscribing, and take
When it is laborious, inscribing can also feel dry as dust for a long time, and learning efficiency is not high, and because the option position of printing is constant, student
After to complete answer, it is easy to it is subconscious to remember option label corresponding to correct option, rather than got a real idea of correct
Answer, when answering next time, easily occur not getting a real idea of but selecting the problem of correct, be unfavorable for carrying for English level
It is high.
The content of the invention
It is an object of the invention to provide a kind of efficiently English single choice test items learning device, it can show that selection is
No is correct option, and can make option displaying block evolution, improves learning efficiency, is advantageous to promote the use of.
Above-mentioned purpose is realized, the present invention takes following technical proposals：A kind of efficiently English single choice test items learning device, bag
Including shell, answering pen and multiple topic plates, described shell includes three adjacent affixed rectangular cylinders, each rectangular cylinder bottom card
Provided with a bottom, multiple described topic plates are vertically stacked with middle rectangular cylinder, the topic plate supported underneath of bottom has pressure
Spring, described stage clip and corresponding described bottom are affixed, and rear and front end is respectively fixed with a bar shaped card at the top of each rectangular cylinder
Plate, the topic board of the top is located at below the bar shaped clamp described in the rectangular cylinder two of described centre, at the top of each rectangular cylinder
A gap is respectively arranged on the left side and the right side, the topic plate of described the top can slide into the square of both sides by corresponding described gap
In shape cylinder, every topic plate upper surface first half be topic viewing area, and every topic plate upper surface is latter half of to be option viewing area and set
There is round recessed, each described round recessed inner bottom surface center is provided with circular hole, and is corresponding with a rotating shaft bar, the rotating shaft described in every
It is rotatablely connected among bar side wall with corresponding described circular hole, is rotated in each round recessed and be provided with an option disk, Mei Gesuo
The option lower disk surface center stated and corresponding rotating shaft bar upper end are affixed, and each option disk upper surface periphery is angularly embedded in
There are multiple option displaying blocks, every rotating shaft bar lower end is coaxially fixed with gear, and the round recessed top of every topic plate is in left-right direction
Spur rack is fixed with, the gear described in topic plate above in plates and underlying topic plate institute are inscribed per neighbouring two
Engagement is set among the spur rack stated, and described answering pen upper end is fixed with display lamp, when answering pen lower end and any topic plate
When the corresponding described option displaying block of correct option contacts, described display lamp is opened.
Compared with prior art, the beneficial effects of the invention are as follows：
1. the present invention is rational in infrastructure effectively, when being answered by answering pen to topic plate, the display lamp of answering pen can directly display
Go out whether selected option displaying block is correct option, facilitate student efficiently to study English single choice test items；
When being slid into after answering in the rectangular cylinder of both sides, 2. option disk can be rotated the topic plate of the present invention, make choosing
Displaying block evolution, when avoiding answering next time, student is subconscious to remember option label corresponding to correct option, and
It is not to have got a real idea of correct option, caused does not get a real idea of but select the problem of correct；
3. the present invention facilitates student arranged to mistake, the learning efficiency of English single choice test items is effectively improved；
4. the present invention can strengthen students ' interest of study, and cost is cheap, is advantageous to promote the use of.
Brief description of the drawings
Fig. 1 is the overall structure axonometric drawing of the efficient English single choice test items learning device of the present invention；
Fig. 2 is the fractionation structure axonometric drawing of the shell of the present invention；
Fig. 3 is the axonometric drawing of the topic plate of the present invention；
Fig. 4 is the A direction views that Fig. 3 is；
Fig. 5 is the fractionation structure axonometric drawing of the topic plate of the present invention；
Fig. 6 is the principle schematic when option disk of the answering pen and topic plate of the present invention is used cooperatively；
Fig. 7 is the circuit block diagram of the answering pen of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the present invention is clearly and completely retouched
State, it is clear that described embodiment is only the part of the embodiment of invention, rather than whole embodiments, based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made,
Belong to the scope of protection of the invention.
Embodiment one：As shown in Fig. 1 ~ Fig. 7, the invention discloses a kind of efficiently English single choice test items study dress
Put, including shell, answering pen 10 and multiple topic plates 4, described shell include three adjacent affixed rectangular cylinders 1, Mei Geju
The bottom of shape cylinder 1 is arranged with a bottom 2, and multiple described topic plates 4, the topic of bottom are vertically stacked with middle rectangular cylinder 1
The supported underneath of plate 4 has stage clip 3, and described stage clip 3 and corresponding described bottom 2 are affixed, each top rear and front end of rectangular cylinder 1 point
A bar shaped clamp 1-1 is not fixed with, and the topic plate 4 of the top is fastened on the bar shaped described in the rectangular cylinder 1 two of described centre
Below clamp 1-1, each top of rectangular cylinder 1 is respectively arranged on the left side and the right side a gap 1-2, and the topic plate 4 of described the top can
Slid into by corresponding described gap 1-2 in the rectangular cylinder 1 of both sides, every topic upper surface first half of plate 4 is topic viewing area
4-1, every topic plate 4 upper surface is latter half of to be option viewing area and is provided with round recessed 4-2, bottom in each described round recessed 4-2
Face center is provided with circular hole, and is corresponding with a rotating shaft bar 5, the side wall of rotating shaft bar 5 centre described in every and corresponding described circular hole
Rotation connection, interior rotate of each round recessed 4-2 are provided with an option disk 6, each described lower surface center of option disk 6
Affixed with the corresponding upper end of rotating shaft bar 5, each upper surface periphery of option disk 6 is angularly embedded with multiple option displaying blocks 7, often
The lower end of root rotating shaft bar 5 is coaxially fixed with gear 8, and spur rack 9 is fixed with left-right direction above the round recessed 4-2 of every topic plate 4,
Straight-tooth of the gear 8 described in underlying topic plate 4 in per two neighbouring topic plates 4 described in topic plate 4 above
Engagement is set among bar 9, and the described upper end of answering pen 10 is fixed with display lamp 10-6, when the lower end of answering pen 10 and any topic plate 4
Option displaying block 7 corresponding to correct option when contacting, described display lamp 10-6 is opened.
Embodiment two：As shown in Fig. 1,3,6,7, present embodiment is to enter one to what embodiment one was made
Step explanation, for described answering pen 10 to be hollow cylindric, the lower end of answering pen 10 is provided with perforate 10-7, in answering pen 10 on lower end
Lower slider has the 10-1 of magnet one, and the described 10-1N poles of magnet one are set down, and vertical rod is vertically fixed with above the 10-1 of magnet one
10-2, described vertical rod 10-2 upper ends are fixed with interval above conductive contact one 10-3, the described 10-3 of conductive contact one and fixed
There is the 10-4 of conductive contact two, it is described display lamp 10-6 that power supply 10-5, described power supply 10-5 are further fixed in answering pen 10
Power supply, when the 10-3 of conductive contact one contacts with the described 10-4 of conductive contact two, display lamp 10-6 is opened, when conductive contact one
Display lamp 10-6 is closed when 10-3 separates with the 10-4 of conductive contact two, and multiple option displaying blocks 7 of the topic plate 4 described in every are
Magnet is made, and the wherein corresponding described option displaying block 7N poles of correct option are set upward, when the lower end of answering pen 10 and any topic
When option displaying block 7 corresponding to the correct option of plate 4 contacts, the 10-1 of magnet one of answering pen 10 is corresponding with described correct option
Option displaying block 7 repel each other, the 10-1 upward slidings of magnet one, the 10-3 of conductive contact one contacts with the 10-4 of conductive contact two, display
Lamp 10-6 is opened, when the lower end of answering pen 10 contacts with option displaying block 7 corresponding to the wrong answer of any topic plate 4, answering pen
10 10-1 of magnet one option displaying blocks 7 corresponding with described wrong answer are attracting, and display lamp 10-6 is not turned on.
Embodiment three：As shown in figure 5, present embodiment is to embodiment one or embodiment two
The further explanation made, each described lower surface periphery of option disk 6 is fixed with to be corresponded with multiple option displaying blocks 7
The 6-1 of magnet two, each described round recessed 4-2 inner bottom surfaces periphery is fixed with and multiple described 6-1 of magnet two are corresponded
Magnet three 4-3, the multiple described 4-3 of magnet three and multiple 6-1 of magnet two are spaced attracting setting one by one.
Embodiment four：As shown in Fig. 3,5, present embodiment is that embodiment three is made furtherly
Bright, the upper surface round recessed 4-2 peripheries of topic plate 4 described in every are provided with and the one-to-one option label of multiple option displaying blocks 7
11。
Embodiment five：As shown in figure 4, present embodiment is that embodiment one is made furtherly
Bright, the lower surface of topic plate 4 described in every is fixedly arranged at the front end with a block rubber 12, the described lower surface of block rubber 12 with it is corresponding described in
The lower surface of gear 8 concordantly set.
Embodiment six：As shown in Figure 1, 2, present embodiment is that embodiment one is made furtherly
Bright, each described bottom 2 is the U-board shape that bottom is straight end, is fixed respectively among each vertical plates on both sides inner surface of bottom 2
There is a fixture block 2-1, each described outer wall bottom of rectangular cylinder 1 is provided with two neck 1- being engaged with described fixture block 2-1
3, each bottom 2 passes through two fixture block 2-1 and the neck 1-3 clampings described in two of corresponding rectangular cylinder 1.
Embodiment seven：As shown in Figure 1, 2, present embodiment is that embodiment one is made furtherly
Bright, the outer wall of rectangular cylinder 1 of described centre is fixed with the pen clip that can grip answering pen 10.
Embodiment eight：As shown in Figure 4,5, present embodiment is that embodiment one is made furtherly
It is bright, be provided with annular groove among the side wall of rotating shaft bar 5 described in every, every rotating shaft bar 5 by described annular groove with it is corresponding
Round recessed 4-2 circular hole rotation connection.
When using of the invention, student can gradually answer, and multiple inscribe plates 4, answering pen 10 are held when answering, by inscribing plate 4
Topic viewing area 4-1 carries out reading topic, when selecting option, by the lower end of answering pen 10 and the option displaying block 7 that selection is wanted on topic plate 4
Contact, such as selects the display lamp 10-6 of correct answering pen 10 to open, such as selects the display lamp 10-6 of wrong answering pen 10 to be not turned on,
Folding and unfolding can be slided respectively in the rectangular cylinder 1 of both sides by answering questions and answer the topic plate 4 of mistake, carry out taxonomic revision, and topic plate 4 slides same
When, inscribing the option disk 6 of plate 4 can be rotated in the case where the spur rack 9 of gear 8 and next topic plate 4 acts on, and make option displaying block
7 evolutions, the 6-1 of magnet two and round recessed 4-2 of option disk 6 4-3 of magnet three are engaged, and can rotate option disk 6
After stopping, multiple option displaying blocks 7 are again corresponding with option label 11, and when avoiding answering next time, student is subconscious to be remembered
Option label 11 corresponding to correct option, rather than correct option has been got a real idea of, caused do not get a real idea of but select
Select the problem of correct, block rubber 12 can ensure that per two neighbouring topic plates 4 be level, simple and practical, be advantageous to promote.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in the form of others dress bodies.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the condition of equivalent of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the involved claim of limitation.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that those skilled in the art should for clarity
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It is appreciated that other embodiment.
Claims (8)
- A kind of 1. efficiently English single choice test items learning device, it is characterised in that：Including shell, answering pen（10）And multiple topics Plate（4）, described shell includes three adjacent affixed rectangular cylinders（1）, each rectangular cylinder（1）Bottom is arranged with a bottom （2）, middle rectangular cylinder（1）It is interior to be vertically stacked with multiple described topic plates（4）, the topic plate of bottom（4）Supported underneath has pressure Spring（3）, described stage clip（3）With corresponding described bottom（2）It is affixed, each rectangular cylinder（1）Top rear and front end is fixed respectively There is a bar shaped clamp（1-1）, the topic plate of the top（4）It is fastened on the rectangular cylinder of described centre（1）Bar shaped described in two Clamp（1-1）Lower section, each rectangular cylinder（1）Top is respectively arranged on the left side and the right side a gap（1-2）, the topic of described the top Plate（4）Corresponding described gap can be passed through（1-2）Slide into the rectangular cylinder of both sides（1）It is interior, every topic plate（4）Upper surface first half For topic viewing area（4-1）, every topic plate（4）Upper surface is latter half of to be option viewing area and is provided with round recessed（4-2）, Mei Gesuo The round recessed stated（4-2）Inner bottom surface center is provided with circular hole, and is corresponding with a rotating shaft bar（5）, the rotating shaft bar described in every（5）Side It is rotatablely connected among wall with corresponding described circular hole, each round recessed（4-2）Interior rotation is provided with an option disk（6）, often Individual described option disk（6）Lower surface center and corresponding rotating shaft bar（5）Upper end is affixed, each option disk（6）Upper surface Periphery is angularly embedded with multiple option displaying blocks（7）, every rotating shaft bar（5）Lower end is coaxially fixed with gear（8）, every topic plate （4）Round recessed（4-2）Top is fixed with spur rack in left-right direction（9）, per two neighbouring topic plates（4）In positioned at upper The topic plate of side（4）Described gear（8）With underlying topic plate（4）Described spur rack（9）Centre engagement is set, described Answering pen（10）Upper end is fixed with display lamp（10-6）, work as answering pen（10）Lower end and any topic plate（4）Correct option it is corresponding Described option displaying block（7）During contact, described display lamp（10-6）Open.
- A kind of 2. efficiently English single choice test items learning device according to claim 1, it is characterised in that：Described answer Pen（10）For hollow cylindric, answering pen（10）Lower end is provided with perforate（10-7）, answering pen（10）Interior lower end has slided up and down Magnet one（10-1）, described magnet one（10-1）N poles are set down, magnet one（10-1）Top is vertically fixed with vertical rod（10- 2）, described vertical rod（10-2）Upper end is fixed with conductive contact one（10-3）, described conductive contact one（10-3）Top interval It is fixed with conductive contact two（10-4）, answering pen（10）Inside it is further fixed on power supply（10-5）, described power supply（10-5）To be described Display lamp（10-6）Power supply, when conductive contact one（10-3）With described conductive contact two（10-4）Display lamp during contact（10- 6）Open, when conductive contact one（10-3）With conductive contact two（10-4）Display lamp during separation（10-6）Close, described in every Inscribe plate（4）Multiple option displaying blocks（7）It is that magnet is made, wherein correct option corresponds to described option displaying block（7）N poles Set upward, work as answering pen（10）Lower end and any topic plate（4）Correct option corresponding to option displaying block（7）During contact, answer Inscribe pen（10）Magnet one（10-1）Option displaying block corresponding with described correct option（7）Repel each other, magnet one（10-1）To Upper slip, conductive contact one（10-3）With conductive contact two（10-4）Contact, display lamp（10-6）Open, work as answering pen（10）Under End and any topic plate（4）Wrong answer corresponding to option displaying block（7）During contact, answering pen（10）Magnet one（10-1）With Option displaying block corresponding to described wrong answer（7）It is attracting, display lamp（10-6）It is not turned on.
- A kind of 3. efficiently English single choice test items learning device according to claim 1 or 2, it is characterised in that：Each institute The option disk stated（6）Lower surface periphery is fixed with and multiple option displaying blocks（7）One-to-one magnet two（6-1）, each Described round recessed（4-2）Inner bottom surface periphery is fixed with and multiple described magnet two（6-1）One-to-one magnet three（4- 3）, multiple described magnet three（4-3）With multiple magnet two（6-1）Attracting setting is spaced one by one.
- A kind of 4. efficiently English single choice test items learning device according to claim 3, it is characterised in that：Described in every Inscribe plate（4）Upper surface round recessed（4-2）Periphery is provided with and multiple option displaying blocks（7）One-to-one option label（11）.
- A kind of 5. efficiently English single choice test items learning device according to claim 1, it is characterised in that：Described in every Inscribe plate（4）Lower surface is fixedly arranged at the front end with a block rubber（12）, described block rubber（12）Lower surface and corresponding described gear （8）Lower surface is concordantly set.
- A kind of 6. efficiently English single choice test items learning device according to claim 1, it is characterised in that：Described in each Bottom（2）Be bottom be straight end U-board shape, each bottom（2）A card is respectively fixed among vertical plates on both sides inner surface Block（2-1）, each described rectangular cylinder（1）Outer wall bottom is provided with two and described fixture block（2-1）The neck being engaged（1- 3）, each bottom（2）Pass through two fixture blocks（2-1）With corresponding rectangular cylinder（1）Two described in neck（1-3）Clamping.
- A kind of 7. efficiently English single choice test items learning device according to claim 1, it is characterised in that：Described centre Rectangular cylinder（1）Outer wall is fixed with can be by answering pen（10）The pen clip gripped.
- A kind of 8. efficiently English single choice test items learning device according to claim 1, it is characterised in that：Described in every Rotating shaft bar（5）Annular groove, every rotating shaft bar are provided among side wall（5）Pass through described annular groove and corresponding round recessed（4- 2）Circular hole rotation connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810045947.2A CN107886807B (en) | 2018-01-17 | 2018-01-17 | A kind of efficient English single choice test items learning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810045947.2A CN107886807B (en) | 2018-01-17 | 2018-01-17 | A kind of efficient English single choice test items learning device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107886807A true CN107886807A (en) | 2018-04-06 |
| CN107886807B CN107886807B (en) | 2018-08-17 |
Family
ID=61770364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810045947.2A Expired - Fee Related CN107886807B (en) | 2018-01-17 | 2018-01-17 | A kind of efficient English single choice test items learning device |
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| Country | Link |
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| CN (1) | CN107886807B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109102728A (en) * | 2018-08-31 | 2018-12-28 | 李伟 | A kind of biochemical Balance of reaction equation exercise device of junior-senior high school |
| CN109147486A (en) * | 2018-08-31 | 2019-01-04 | 晏子译 | A kind of Portable English multiple-choice question learning card group |
| CN110473432A (en) * | 2019-08-21 | 2019-11-19 | 山东交通职业学院 | A kind of English teaching outpost testing apparatus |
| CN117137487A (en) * | 2023-09-08 | 2023-12-01 | 黑龙江中医药大学 | Auxiliary diagnosis device for depression |
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| CN2230463Y (en) * | 1995-03-18 | 1996-07-03 | 陈宜中 | Punched-card computer for learning |
| CN202185147U (en) * | 2011-09-02 | 2012-04-11 | 北京洪恩教育科技股份有限公司 | Toggle switch type intelligence-reinforcing question and answer type game operation panel |
| CN204519833U (en) * | 2015-04-20 | 2015-08-05 | 罗春婷 | Political knowledge contest exclusive table |
| CN206726517U (en) * | 2017-04-15 | 2017-12-08 | 宁夏宁信信息科技有限公司 | A kind of blank of electronic commerce teaching with display screen |
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2018
- 2018-01-17 CN CN201810045947.2A patent/CN107886807B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2230463Y (en) * | 1995-03-18 | 1996-07-03 | 陈宜中 | Punched-card computer for learning |
| CN202185147U (en) * | 2011-09-02 | 2012-04-11 | 北京洪恩教育科技股份有限公司 | Toggle switch type intelligence-reinforcing question and answer type game operation panel |
| CN204519833U (en) * | 2015-04-20 | 2015-08-05 | 罗春婷 | Political knowledge contest exclusive table |
| CN206726517U (en) * | 2017-04-15 | 2017-12-08 | 宁夏宁信信息科技有限公司 | A kind of blank of electronic commerce teaching with display screen |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109102728A (en) * | 2018-08-31 | 2018-12-28 | 李伟 | A kind of biochemical Balance of reaction equation exercise device of junior-senior high school |
| CN109147486A (en) * | 2018-08-31 | 2019-01-04 | 晏子译 | A kind of Portable English multiple-choice question learning card group |
| CN109147486B (en) * | 2018-08-31 | 2020-07-28 | 晏子译 | Portable English choice question learning card group |
| CN110473432A (en) * | 2019-08-21 | 2019-11-19 | 山东交通职业学院 | A kind of English teaching outpost testing apparatus |
| CN110473432B (en) * | 2019-08-21 | 2022-01-11 | 山东交通职业学院 | Checkpoint testing device for English teaching |
| CN117137487A (en) * | 2023-09-08 | 2023-12-01 | 黑龙江中医药大学 | Auxiliary diagnosis device for depression |
| CN117137487B (en) * | 2023-09-08 | 2024-03-29 | 黑龙江中医药大学 | Auxiliary diagnosis device for depression |
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|---|---|
| CN107886807B (en) | 2018-08-17 |
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Granted publication date: 20180817 |