单项选择题

The purpose of engine stand-by is that （）

A.the main engine in the stand-by condition
B.auxiliary machinery in the stand-by condition
C.dynamical equipments in the stand-by condition and could be used immediately
D.A and B

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单项选择题

Which is false about engine trials?（）

A.engine trails should be done after finishing the operation of turning the engine with the turning gear and starting the engine on air briefly
B.in the operation of engine trails, the main engine should be running in low-speed
C.As to the ship equipment with twin main engine, engine trials should be done with one engine ahead and another engine astern at the same time
D.the order “engine trials” should be given by the bridge

单项选择题

Which of the following is false?（）

A.preparation for stand-by should be organized by engine room
B.engine trails should be agreed with bridge, and then do it
C.As to engine trials of the twin diesels and two propellers, the two diesels should use “slow ahead” at the same time
D.After engine trials, the handle of the engine telegraph should be put in the “stop” position

单项选择题

When the ship in the condition of stand-by and engine trials, usually put the engine telegraph in the （） position.

A.stand by
B.slow ahead
C.slow astern
D.B or C