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【单选题】
由折射率为n=1.65 的玻璃制成的薄凸透镜，前后两球面的曲率半径均为40cm，在空气中，其焦距等于多少cm？。( )
A.
20
B.
21
C.
25
D.
31
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参考答案：
举一反三
【单选题】皮内注射的皮肤消毒剂为
A.
络合碘
B.
2%碘酊和70%乙醇
C.
70%乙醇
D.
0.1%苯扎溴铵
E.
2%过氧化氢
查看完整题目与答案
【单选题】()是个人对自己能力以及运用该能力将得到何种结果所持有的信心或把握程度。
A.
自信心
B.
自知力
C.
自我效能感
D.
能力倾向
查看完整题目与答案
【单选题】()是个人对自己的能力、以及运用该能力将得到何种结果所持的信心或把握程度。
A.
能力
B.
自我效能感
C.
专业技术技能
D.
可迁移技能
查看完整题目与答案
【简答题】A．The woman will put off her decision to study. B．The woman will now just study rather than go out. C．The woman will go out because she's in a good mood. D．The woman will have to make a decision wheth...
查看完整题目与答案
【单选题】Woman: Could you stop in front of the supermarket? Man: Oh, can’t you see the traffic lights? Can you get off at the medical shop? Woman: It couldn’t be better. Where will the woman get off?
A.
At the traffic lights.
B.
At the medical shop.
C.
In front of the supermarket.
D.
We don’t know.
查看完整题目与答案
【简答题】A．The woman will put off her decision to study. B．The woman will now just study rather than go out. C．The woman will go out because she's in a good mood. D．The woman will have to make a decision wheth...
查看完整题目与答案
【判断题】心肌梗塞可以用吗啡止痛
A.
正确
B.
错误
查看完整题目与答案
【单选题】Choose the correct explanation for the underlined words. When a man and a woman go in or out of a room together, the man should help the woman take off or put on her coat.
A.
remove something you are wearing
B.
leave, espeacially in a hurry
C.
leave the ground and begin flying
查看完整题目与答案
【简答题】A．The woman will put off her decision to study. B．The woman will now just study rather than go out. C．The woman will go out because she's in a good mood. D．The woman will have to make a decision wheth...
查看完整题目与答案
【单选题】皮内注射常用的皮肤消毒剂是
A.
70%乙醇溶液
B.
2%碘酊
C.
0.1%苯扎溴铵
D.
0.5%碘伏
E.
生理盐水
查看完整题目与答案
相关题目：
【单选题】皮内注射的皮肤消毒剂为
A.
络合碘
B.
2%碘酊和70%乙醇
C.
70%乙醇
D.
0.1%苯扎溴铵
E.
2%过氧化氢
查看完整题目与答案
【单选题】()是个人对自己能力以及运用该能力将得到何种结果所持有的信心或把握程度。
A.
自信心
B.
自知力
C.
自我效能感
D.
能力倾向
查看完整题目与答案
【单选题】()是个人对自己的能力、以及运用该能力将得到何种结果所持的信心或把握程度。
A.
能力
B.
自我效能感
C.
专业技术技能
D.
可迁移技能
查看完整题目与答案
【简答题】A．The woman will put off her decision to study. B．The woman will now just study rather than go out. C．The woman will go out because she's in a good mood. D．The woman will have to make a decision wheth...
查看完整题目与答案
【单选题】Woman: Could you stop in front of the supermarket? Man: Oh, can’t you see the traffic lights? Can you get off at the medical shop? Woman: It couldn’t be better. Where will the woman get off?
A.
At the traffic lights.
B.
At the medical shop.
C.
In front of the supermarket.
D.
We don’t know.
查看完整题目与答案
【简答题】A．The woman will put off her decision to study. B．The woman will now just study rather than go out. C．The woman will go out because she's in a good mood. D．The woman will have to make a decision wheth...
查看完整题目与答案
【判断题】心肌梗塞可以用吗啡止痛
A.
正确
B.
错误
查看完整题目与答案
【单选题】Choose the correct explanation for the underlined words. When a man and a woman go in or out of a room together, the man should help the woman take off or put on her coat.
A.
remove something you are wearing
B.
leave, espeacially in a hurry
C.
leave the ground and begin flying
查看完整题目与答案
【简答题】A．The woman will put off her decision to study. B．The woman will now just study rather than go out. C．The woman will go out because she's in a good mood. D．The woman will have to make a decision wheth...
查看完整题目与答案
【单选题】皮内注射常用的皮肤消毒剂是
A.
70%乙醇溶液
B.
2%碘酊
C.
0.1%苯扎溴铵
D.
0.5%碘伏
E.
生理盐水
查看完整题目与答案
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