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【单选题】
当显微镜视野过暗时,应该怎样调亮:1用大光圈 2选用小光圈 3选用平面反光镜 4选用凹面反光镜A.
①③
B.
②④
C.
①④
D.
②③
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A.
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C.
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D.
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A.
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D.
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【单选题】听力原文：W: Suppose the company offered you a raise in pay. Would you be so determined to quit the job? M: Yes. I've set my mind on it. I want to find a job in which I can fully exert my ability. Q: Why d...
A.
He is not satisfied with the pay.
B.
He is not able to enjoy paid holidays.
C.
The job is not very challenging for him.
D.
There is no hope of promotion.
【单选题】听力原文：W: Suppose the company offered you a raise in pay. Would you be so determined to quit the job? M: Yes. I've set my mind on it. I want to find a job in which I can fully exert my ability. Q: Why d...
A.
He is not satisfied with the pay.
B.
He is not able to enjoy paid holidays.
C.
The job is not very challenging for him.
D.
There is no hope of promotion.
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