單項(xiàng)選擇題Prior to starting, the purpose of turning over a main propulsion diesel engine with the cylinder test cocks open, is to ()

A.test the starting system
B.remove condensation from the cylinders
C.check the compression
D.check for proper lube oil pressure


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1.單項(xiàng)選擇題In the starting process of a diesel engine, the main object is to attain the compression conditions sufficient to ()

A.turn the flywheel
B.reduce friction
C.overcome inertia
D.ignite the fuel

2.單項(xiàng)選擇題Air in the fuel lines to the fuel injection nozzles of a diesel will result in ().

A.lower compression pressures
B.overheating without smoking
C.failure to start
D.a run away without load

4.單項(xiàng)選擇題Cold weather starting of a diesel engine may be made easier by()

A.decreasing the compression ratio
B.using a special fuel having a high ignition temperature
C.increasing the starting air supply
D.heating the jacket water

5.單項(xiàng)選擇題Starting a large low-speed propulsion diesel engine on diesel fuel during cold weather conditions, will be made easier by ()

A.increasing the quantity of starting air
B.increasing the lube oil pressure
C.heating the engine fuel supply
D.heating the engine coolant

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