A.craned out
B.rolled out
C.lifted out
D.turned out
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A.aluminum-plated
B.bronze-plated
C.zinc-plated
D.chromium-plated
A.must be provided
B.may be provided
C.have provided
D.can be provided
A.has to be cooled
B.has heated
C.has preheated
D.has to be preheated
A.inefficiency
B.oiliness
C.detergency
D.purity
A.reciprocating pump
B.gear pump
C.centrifugal pump
D.vane pump
最新試題
Combustion knock can occur in the cylinders of a diesel engine under any condition permitting （）.
In a simple mechanical governor, the （）.
The function of diesel engine piston compression rings is to （）.
A diesel engine is operating with excessively high exhaust temperatures at all cylindersTo correct this condition, you should FIRST （）.
Engine protection by means of an alarm or shutdown control can be obtained with devices that are sensitive to （）.
The minimum speed an engine must attain before ignition can occur depends upon （）.
What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）
What is the function of the thrust bearing?（）
Control of the main propulsion diesel engines can be shifted from the engine room to the wheelhouse from the （）.
Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.