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單項(xiàng)選擇題

If the sump（）were to rise this would indicate water leakage into the oil an d an investigation into the cause must be made.

A.temperature
B.viscosity
C.lever
D.level

單項(xiàng)選擇題

If the needle valve in a fuel injection nozzle sticks open （）.

A.no fuel will be delivered through the nozzle
B.the nozzle will overheat and crack
C.time of injection will change
D.fuel will leak into the drain line