單項(xiàng)選擇題By regulation,cargo tanks must be inert before and during what operation?().

A.Stripping
B.Loading
C.Cleaning
D.Crude oil washing


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1.單項(xiàng)選擇題By regulation,cargo tank atmosphere must be inert before and during which operation?()

A.Stripping
B.Loading
C.Cleaning
D.All of the above

2.單項(xiàng)選擇題An oil tanker,except as provided for otherwise,might discharge certain amount at certain rate of oil or oily mixtures into sea when().

A.she is not within a special area
B.she is within a special area
C.she has just departured from a special area
D.she is about to enter a special area

4.單項(xiàng)選擇題Air gap is the vertical distance between the bottom of the hull and the().

A.still water level
B.wave crest
C.wave crest plus the charted water depth and tidal corrections
D.wave crest plus the charted water depth and tidal correction and storm surge

5.單項(xiàng)選擇題According to regulations,access to a cargo pumproom in a tanker carrying grades C or D liquid cargo shall be().

A.from areas equipped with power ventilation
B.only from enclosed areas free from sources of vapor ignition
C.from the open deck
D.from within the vessel

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Air gap is the vertical distance between the bottom of the hull and the().

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The safe working load for the assembled cargo gear and the minimum angle to the horizontal for which the gear is designed shall be marked on the().

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