The emergency alarm is sounded on （）(汽笛) according to master’s order.

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

单项选择题Post two lookouts with （）(望远镜).

A.binoculars
B.mask
C.sextant
D.VHF

单项选择题Prevent （）(油) overboard

A.chips
B.water
C.cotton
D.oil

单项选择题Put on your （）(救生衣).

A.lifeboat
B.life-jacket
C.life-raft
D.lifebuoy