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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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
