单项选择题

（） must know the location as well as the operation of the life-saving and fire-fighting appliances.

A. All officers
B. All engineers
C. All the crew
D. All sailors

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单项选择题

A. The ship
B. The cargo on board
C. The persons on board
D. The bridge

单项选择题

A.VHF
B.broadcast
C.radio
D.sextant

单项选择题

A. in the refrigerator
B. in the cupboard
C. under the bed
D. on the table