單項(xiàng)選擇題

Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）

A.the master and the chief engineer are unable to communicate effectively
B.serious corrosion on the hull
C.damaged sanitary pump
D.one page missing in the oil record book

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單項(xiàng)選擇題

The shipboard oil pollution emergency plan will be invalid after （）

A.one year
B.two years
C.four years
D.five years

單項(xiàng)選擇題

（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.

A.Ring type
B.Fork type
C.Spade type
D.Push on pull off type

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