單項選擇題

The primary function of a fuel delivery check valve assembly is to（）

A.deliver proper fuel quantity to the injection nozzle
B.provide rapid fuel injection cutoff
C.control fuel quantity entering the pump body
D.control fuel pressure delivered to the combustion chamber

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單項選擇題

For any piston ring to operate smoothly without scuffing ,the ring must be （）.

A.of a material harder than the cylinder liner
B.properly lubricated
C.prevented from compressing
D.prevented from rotating during engine operation

單項選擇題

Shaker, circulation and spray are the three general methods used in（）

A.pre-injection fuel oil treatment
B.lube oil filtration
C.lube oil purification
D.piston cooling

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The primary function of a fuel delivery check valve assembly is to（）

你可能感興趣的試題

For any piston ring to operate smoothly without scuffing ,the ring must be （）.

Shaker, circulation and spray are the three general methods used in（）