A、A.does not change
B、B.improves rapidly
C、C.improves only slightly
D、D.becomes poor
更多“After the passage of a cold front the visibility（）.”相关的问题
A、A.at the first stop after a long voyage egby anchoring if possible B、B.at the first stop after arrival at harbor C、C.at the first stop after low load running D、D.at the first stop after passing river or canal passage
A、prevent the passage of flammable gases B、prevent the passage of poisonous vapors C、delay the spread of heat and flames D、maintain watertight integrity
A、permits the passage of vapor but not of flame B、prevents the passage of flammable vapors C、prevents inert gas from leaving a tank D、permits vapors to exit but not enter a tank
A、It’s important to make clear the chain of command within the vessel B、It is primarily your own responsibility to look after your person safety C、The porthole is the first choice to escape when in emergency D、all cabins are fitted with a Survival at Sea Manual
A、A.permit the passage of vapor but not of flame B、B.prevents the passage of flammable vapors C、C.prevents inert gas from leaving a tank D、D.permits vapors to exit but not enter a tank
A、the port of destination B、the next port of call C、the port of arrival D、the last port of call
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