第三章测试
1.The ( ) in the cylinder is connected to the top of a connecting rod.
A:piston
B:cylinder
C:crankshaft
D:valve

答案:A
2.A crankshaft’s job in an engine is to ( )
A:change linear motion into rotational motion
B:deliver fuel to the cylinders
C:keep cylinder heads in place
D:convert fuel energy into mechanical energy
3.The crank connecting rod mechanism consists of three parts—( ).
A:camshaft and valve group
B:crankshaft and flywheel group
C:engine block group
D:piston and connecting rod group
4.Crank-connecting rod mechanism is the main working mechanism of reciprocating internal combustion engine.( )
A:对 B:错 5.The top of the cylinder block is covered with the cylinder head. ( )
A:对 B:错

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