The crankshaft is used to change the ____________ motion of the piston into __________ motion. A: reciprocating, rotary B: rotary, reciprocating C: vertical, horizontal D: horizontal, vertical

The hydraulic condition of the rotary baffle plate flocculation tank is better than that of the reciprocating type， and head loss of the rotary type is 40% less than that of the reciprocating type。 （ ）

It is held in the crankcase in the cylinder block and converts the reciprocating motion of the pistons into a rotary motion for the drive wheels．

Automotive engines are classified as the reciprocating engine and rotary engine according to the way they work; as the gasoline engine and diesel engine according to fuel they burn;

According to the fuel an engine burns, there are ________. A: reciprocating and rotary engines B: gasoline and diesel engines C: 4-cylinder and 6-cylinder engines D: inline and boxer engines

The reciprocating motion of the pistons is changed to rotary motion as the crankshaft spins. 这句话的意思是旋转运动就转化为活塞的往复直线运动。

The reciprocating motion of the pistons is changed to rotary motion as the crankshaft spins. 这句话的意思是旋转运动就转化为活塞的往复直线运动。 A: 正确 B: 错误