这些舱盖通常是用电力或液压驱动的。（）<br>A:These hatches are usually driven by electric or hydraulic power.<br>B:These hatch covers are usually driven by electric or hydraulic power.<br>C:These hatch covers are usually driven by electric.<br>D:These hatch covers are usually driven by hydraulic power.

这些舱盖通常是用电力或液压驱动的。（）
A:These hatches are usually driven by electric or hydraulic power.
B:These hatch covers are usually driven by electric or hydraulic power.
C:These hatch covers are usually driven by electric.
D:These hatch covers are usually driven by hydraulic power.

出自：船舶水手证

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