Crew chiefs supervised engines, switches and lights that told them how each item

游客2025-05-10 6

问题 Crew chiefs supervised engines, switches and lights that told them how each item of equipment was functioning.

选项 A、observed
B、preserved
C、monitored
D、nurtured

答案 C

解析 supervise监督，管理，指导；observe观察，遵守；preserve保护，保持；monitor监控；nurture养育，教养。

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