单项选择题
Before being shut down, a diesel engine should idle a few minutes in orderto （）
A.prevent governor surging at shutdown
B.make sure the fuel nozzles are flushed clean
C.prevent pressure buildup in the fuel lines
D.prevent damage from localized overheating
相关考题
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单项选择题
The main propulsion diesel continues running after you try to shut downYoushould now attempt to（）
A.stop the combustion air supply
B.engage the jacking gear
C.secure the lube oil pump
D.shut off the fuel at the day tank -
单项选择题
Cylinder linings constructed as an integral part of the block, are characterized by which of the following disadvantages?（）
A.They conduct heat poorly
B.They are expensive
C.They cannot be replaced
D.They require special tools for removal -
单项选择题
When running a large, low-speed, main propulsion diesel engine on heavy fuel, which of the following precautions should be observed when switching back over to diesel oil?（）
A.The diesel oil must never be allowed to mix with the heavy fuel
B.The temperature of the fuel from the pre–heater should be gradually reduced after switching over the three–way valve
C.The heating steam to the pre-heater should be secured as soon as the diesel fuel passes through the three-way valve
D.The heating steam must be secured before the diesel oil passes through the three-way valve
