A.excessive heat
B.friction
C.oxidation
D.high pressure
您可能感興趣的試卷
你可能感興趣的試題
A.is made to circulate out of the system
B.is made to circulate within the system
C.is made circulate within the system
D.is made circulate out of the system
A.Hash point
B.Viscosity
C.Pour point
D.Cetane number
A.viscosity
B.flash point
C.cetane number
D.calorific value
A.Air must be admitted；without
B.Oil must be injected；without
C.Air must be admitted；with
D.Oil must be injected；with
A.gives up large amount of heat
B.gives off large amount of heat
C.gives up large amount of steam
D.gives off large amount of steam
最新試題
Proper filtering and straining of fuel oil is important because the （）.
Lube oil filters remove contaminants more efficiently if the oil being filtered is （）.
White smoke exhausting from an operating diesel engine may indicate （）.
Combustion knock can occur in the cylinders of a diesel engine under any condition permitting （）.
To determine if the lube oil filter elements need changing, （）.
Lube oil cannot be efficiently filtered if its （）.
What is the function of the thrust bearing?（）
The minimum speed an engine must attain before ignition can occur depends upon （）.
If the water level dropped rapidly in the expansion tank of a closed diesel engine cooling water system, you should suspect a （）.
When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.