单项选择题
A.VHF B.whistle C.broadcast D.sextant
There is a smell of gas in the hold. You must wear your...
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
Prepare for （）(弃货) cargo.A.jettisoningB.loweringC.hoist...
单项选择题Prepare for （）(弃货) cargo.
A.jettisoning B.lowering C.hoisting D.abandoning
Post two lookouts with （）(望远镜).A.binocularsB.maskC.sext...
单项选择题Post two lookouts with （）(望远镜).
A.binoculars B.mask C.sextant D.VHF
