本题目来源于试卷: Physics Unit25: Optical Instrument，类别为 Generic Physics
[单选题]
If the human eyeball is too long from fkf 41 ijj8vd+dd vw-s;ront to+p (dm.v5bqqc back, this gives rise to a vision defect that can v bq(cmdp +q.5be corrected by using
A. convex meniscus eyeglasses.
B. concave meniscus eyeglasses.
C. cylindrical eyeglasses.
D. contact lenses, but no ordinary lenses.
E. shaded glasses (i.e., something that will cause the iris to dilate more).
参考答案: B
本题详细解析:
暂无
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Post time 2024-1-26 22:03:25