单项选择题

Prior to starting most medium-speed propulsion diesel engines, which of the procedures listed should be observed?（）

A.The expansion tank should be topped off
B.The thermostatic water regulating valves should be manually opened
C.The fuel filters should be changed
D.The engine should be turned over slowly with the indicator cocks open

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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

Winch gears must be maintained in proper alignment to prevent （）.

A.overheating of the lube oil
B.over-speeding of the motor
C.wear on the braking system
D.damage to the teeth

单项选择题

You are unable to pump out the aft starboard engine room bilge well that is fouled, with one foot of water over the top of the bilge well, what actionshould be carried out?（）

A.Send the wiper into the well with only a scoop and pail
B.Remove the bilge manifold valve and attempt to back flush the line
C.Simultaneously operate all available bilge pumps
D.It is only necessary to transfer half the contents of a drum of degreaser into the bilge well