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單項選擇題

The（）(自動艙蓋) 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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單項選擇題

Are you testing the（）(液壓艙蓋)?

A. hydraulic hatch cover
B. hydraulic release unit
C. hydraulic oil jack
D. automatic hatch cover

單項選擇題

Please help me lift the broken （）(墊艙料).

A.material
B.planks
C.mats
D.dunnage