A.piston cooling
B.sleeve cooling
C.central cooling
D.jacket cooling
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A.a exhaust valve
B.a piston skirt
C.a piston crown
D.an air suction valve
A.unusually solid welded
B.never be solid forged
C.almost invariably solid forged
D.almost invariably be welded
A.result from
B.result in
C.give out
D.given from
A.make
B.cause
C.result
D.produce
A.boiler
B.heater
C.engine
D.cooler
最新試題
To determine if the lube oil filter elements need changing, （）.
When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.
If a diesel engine is difficult to start and operates with the engine temperatures lower than normal, you should suspect that the （）.
Combustion knock occurring in a diesel engine can be caused by （）.
An automated diesel engine should normally shut down due to （）
The minimum speed an engine must attain before ignition can occur depends upon （）.
The function of diesel engine piston compression rings is to （）.
Proper filtering and straining of fuel oil is important because the （）.
White smoke exhausting from an operating diesel engine may indicate （）.
If the main engine of an unattended engine room shuts down automatically, it will be indicated by an alarm （）.