The is employed to warm up a large diesel engine before its

The Chief and 3rd Engineers went below，changed the fuel to diesel oil and reduced the engine to slow ahead．This sentence implies all those below except that ________ ．

A.the Engine was not on slow ahead before Chief and 3rd Engineers went down

B.the Engine was using diesel oil before Chief and 3rd Engineers went down

C.the Engine was using fuel oil before Chief and 3rd Engineers went down

D.the Chief and 3rd Engineers went into the Engine Room to operate the Engine

How should you warm up a diesel engine that has not been run for some time?______.

A.Run it at minimum speed for a period of time

B.Run it at half speed for a period of time

C.Bring it to top speed immediately

D.Inject ether into the air intake

Before engaging the turning gear and turning the diesel engine, which of the following operation should be done except______.

A.open the indicator cocks

B.supply some CYL.Oil to cylinder liner wall with lubricator (only for two stoke diesel engine)

C.put the fuel handle in the "stop" position

D.pump up the air bottle

Your vessel has a gasoline engine and a mechanical exhaust ventilation system．BEFORE starting the engine，the exhaust blower should be run long enough to ______．

A.warm up the exhaust blower motor

B.provide a proper supply of fresh air for the engine（s）

C.see the system is in good operating condition

D.insure at least one complete change of air in the compartments concerned

Before "stand by" is rung on the engine telegraph, it is usual to give the main diesel engine a brief trial ahead and astern.

A.with power

B.on power

C.with air

D.on air