第二章The ( ) stores liquid fuel and delivers it to the engines.
答案:fuel system
The ( ) circuits coolant through the engine and the walls of the engine block and head
答案:water pump
As the crankshaft nears the its second complete revolution, the piston again approaches the ( )position.
答案:TDC
After circulating through the engine, the oil drops back to the oil pan.（ ）
答案:对
The exhaust system can not reduce the noise of the burned gases leaving the engine cylinders. （ ）
答案:错
