所给的单词或词组为：
suspend,leaf spring,coil springs,shock absorber,rebound clip,move up and down,spring,torsion barspring

用以上的单词或词组恰当的填空，即：注意时态，语态和单复数等。

1.The_______most commonly used in
automobiles is made up of several long
plates,or leaves.
2._________refers to the use of the front
and rear springs to suspend a vehicle's
"sprung" weight.
3._________are hydraulic restricting
devices used to limit the speed of spring
action.
4.The car frame is connected to the axles by___________which absorb road shock.
5.The__________is made from a length of
steel rod wound into a coil.
6.The front-suspension system must allow the wheels to ___________.
7.In operations,the lower control arms
pivot up and down,twisting the ________.
8.____________are place along the spring to prevent separation of the leaves when the
spring rebounds.

1.leaf spring 2.suspend 3.shock absorber 4.spring 5.coil spring 6.move up and down 7.torsion barspring 8.rebound clip