单项选择题
On hearing the fire signal, the crew should carry out their assigned duties immediately.（）
A.在听到火警信号后，船员应立即履行他们分配的职责。
B.在听到火警信号后，船员应立即分配他们的职责。
C.在听到火警信号前，船员应立即分配他们的职责。
D.在听到火警信号前，船员应立即履行他们分配的职责。
相关考题
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单项选择题
船舶发生溢油事故时，水手的主要工作是清理油污。（）
A. When oilspilling happens on board, the sailors’ work is to do oil-cleaning.
B. When oilspilling happens on board, the sailors’ work is painting.
C. When oilspilling happens on board, the sailors’ work is to do some repair work.
D. When oilspilling happens on board, the captain is in over command of it. -
单项选择题
救火队员之间用灯光保持视觉联系。（）
A. Fire party members maintain contact with lamps.
B. Fire party members maintain visual contact use lamps.
C. Fire party members maintain visual contact with lamps.
D. Fire party members maintain visual contact by lamps. -
单项选择题
我在现场组织救火。（）
A. I’m on the spot organize firefighting.
B. I’m on the spot organizing firefighting.
C. I’m at the spot organizing firefighting.
D. I’m at the spot organize firefighting.
