单项选择题
Close the port side （）(通风口) .
A.ventilators
B. designated station
C. fire outfit
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单项选择题
The emergency alarm is sounded on （）(汽笛) according to master’s order.
A.VHF
B.whistle
C.broadcast
D.sextant -
单项选择题
There is a smell of gas in the hold. You must wear your （）(氧气面罩).
A. fire mask
B. breathing apparatus
C. life-jacket
D. fire drill -
单项选择题
Prepare for （）(弃货) cargo.
A.jettisoning
B.lowering
C.hoisting
D.abandoning
