拉风
参考答案：排风后，拉动缓解阀，排出副风缸的余风，使自动制动机缓解，称为拉风或放风。
One of the advantages with the new tool is that it is users ____. Users can handle it with less effort and more convenience.
A．friendly
B．good
C．well
D．pleased
企业存货周转率指标是衡量企业（）的指标。
A.偿债能力
B.盈利能力
C.营运能力
D.现金流能力
