单项选择题
The（）(自动舱盖) is operated by electric or hydraulic power.
A. automatic hatch cover
B. folding type cover
C. hatch coaming
D. side-rolling type cover
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相关考题
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单项选择题
Are you testing the（）(液压舱盖)?
A. hydraulic hatch cover
B. hydraulic release unit
C. hydraulic oil jack
D. automatic hatch cover -
单项选择题
Please help me lift the broken （）(垫舱料).
A.material
B.planks
C.mats
D.dunnage -
单项选择题
I think you’d better use the （）(岸吊).
A. derrick
B. heavy derrick
C. shore crane
D. floating crane
