如果有空气进入液压站与盘式制动器连接的油管及制动油缸内部,会发生下面哪种情况?()
A.延长松闸时间
B.缩短松闸时间
C.不影响正常工作
D.以上都错
参考答案:A
Few weight-loss pills can help to keep people slim, _______?
A.do they
B.dodt they
C.can't they
D.can they
点