单项选择题

装卸货之前，打开舱盖。（）

A. After loading and discharging, hatch covers will be opened.
B. After loading and discharging, hatch covers will be closed.
C. Before loading and discharging, hatch covers will be opened.
D. Before loading and discharging, hatch covers will be closed.

<上一题目录下一题>

热门试题

单项选择题The running wheel runs along （）on top of the hatch coaming.

A. the guide rail
B. the guide rope
C. the side coaming
D. the guide roller

单项选择题Could you show me （）to open the hatch covers?

A.why
B.when
C.how
D.what

单项选择题If the hatch cover does not move, （）should be checked.

A. the open valve
B. the stop valve
C. the steam valve
D. the close valve

单项选择题To ensure the safety in operating hatch covers, oil the moving parts （）.

A. monthly
B. every three months
C. once monthly
D. every two months

单项选择题During operation, the （）should check the working condition of the derrick.

A.foreman
B.operator
C.opener
D.stevedore