单项选择题
A.turned B.oil level checked C.filled with water D.A and B
The air compressor pumps air to the（）.A.engine cylinder...
单项选择题The air compressor pumps air to the（）.
A.engine cylinder B.air bottle C.evaporator D.condenser
The air compressor pumps air to the （）.A.expansion tank...
单项选择题The air compressor pumps air to the （）.
A.expansion tank B.combustion chamber C.air receiver D.evaporator
The air compressor pumps air to the （）.A.air cylinderB....
A.air cylinder B.combustion chamber C.steam drum D.expansion tank
