He had a clear ______ of what was wrong with the machine and fixed it in a short

游客2025-04-23 1

问题 He had a clear ______ of what was wrong with the machine and fixed it in a short time.

选项 A、debris
B、deficiency
C、perception
D、persecution

答案 C

解析 debris碎片，残骸；deficiency缺乏，不足；perception理解，感知；persecution迫害。

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