問題詳情
37. What do the two instruments mentioned in the second paragraph (Line 5) refer to?
(A) The astronomical telescope and the wave-front sensor.
(B) The aluminum mirror and the laser beam.
(C) The active mirror and the contact lens.
(D) The aluminum mirror and the wave-front sensor.
(A) The astronomical telescope and the wave-front sensor.
(B) The aluminum mirror and the laser beam.
(C) The active mirror and the contact lens.
(D) The aluminum mirror and the wave-front sensor.
參考答案
答案：D
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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