A.make sure
B.be sure
C.assure
D.believe
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A.in duplicate
B.in double
C.at twice
D.for two
A.to reduce
B.to increase
C.and reduce
D.and increase
A.shim
B.gasket
C.washer
D.packing
A.lead
B.forged steel
C.alloy steel
D.aluminum alloy
A.cast iron
B.forged steel
C.stainless steel
D.aluminum alloy
最新試題
A diesel engine piston ring face is in direct contact with the （）.
Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.
Engine protection by means of an alarm or shutdown control can be obtained with devices that are sensitive to （）.
A diesel engine is operating with excessively high exhaust temperatures at all cylindersTo correct this condition, you should FIRST （）.
When would the available energy of the exhaust gases of a two-stroke/cycle diesel engine be insufficient to drive an exhaust gas turbocharger, resulting in the incorrect amount of air for combustion?（）
Routine monitoring of a diesel engine should include （）.
What is the function of the thrust bearing?（）
The ability of the governor to prevent fluctuations in engine speed is termed （）.
The minimum speed an engine must attain before ignition can occur depends upon （）.
In a simple mechanical governor, the （）.