试题详情
- 单项选择题These hatch covers are usually driven by electric or hydraulic power.()
A、这些舱盖通常是用电力驱动的
B、这些舱盖通常是用液压驱动的
C、这些舱盖通常是用电力或液压驱动的
D、这些舱盖通常是用油压或液压驱动的
- C
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