单项选择题

“Movement of engine no longer required” means “（）”.

A.Stop Engine
B.No Engine Revolutions
C.Stand-by Engine
D.Finished With Engine

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单项选择题

The order “（）” means “Maximum maneuvering engine revolution for ahead propulsion”.

A.Full Ahead
B.Half Ahead
C.Full Astern
D.Half Astern

单项选择题

The trim of a vessel is the （）.

A.value of the mean draft
B.degree of list
C.amount of roll
D.difference in fore and aft drafts

单项选择题

The explosive range of a mixture of flammable vapors is specified as a percentage of （）.

A.flammable vapor by volume in air
B.oxygen present to support combustion
C.the temperature of the flash point
D.the lower limit of explosibility of the mixture