单项选择题
A.low compression of the fuel pumps B.incorrect timing of fuel pumps C.the starting air valves stuck D.air-locks in fuel oil pipeline
If the engine （） for a long period, there will be a dan...
单项选择题If the engine （） for a long period, there will be a danger of frost.
A.must to stand inoperative B.has to stand inoperative C.must be stood idle D.will stand idle
If the atomizer holes are enlarged beyond the makers re...
单项选择题If the atomizer holes are enlarged beyond the makers recommended size, the atomizer must be （）.
A.repaired B.replaced C.replenished D.repeated
If diesel oil in this tank is used, the （） of the oil m...
单项选择题If diesel oil in this tank is used, the （） of the oil must not exceed 120 degree F.
A.viscosity B.flash point C.acid value D.temperature
