2. 职称英语
  3. Laser-dopple radar ______ . [br] Which of the following statements is NOT true a

Laser-dopple radar ______ . [br] Which of the following statements is NOT true a

游客2025-07-28  8
问题 Laser-dopple radar ______ . [br] Which of the following statements is NOT true according to the passage ______ .
选项 A、accuracy in speed measurement is essential to spaceships
B、the speeds of space vehicles will vary greatly
C、inaccuracies in measurement could cause accidents in space missions
D、a bump could affect the preciseness of the laser-dopple radar
答案 D
解析 原文未涉及D项内容，故D项正确。A、B、C三项均可在第二段找到根据。它们分别为:...such fine measures of velocity are of prime importance/speeds varying from... five miles per second down to virtual stops/a bump could rip open a ship’s skin, or a nudge could knock the station out of its orbit.
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