凸轮与滚轮间隙在冷态时调整不当，会造成调节汽门早开或无法全开。（）
参考答案：对
切断易导致肛门失禁的是：（）
A.提肛肌
B.肛管直肠环
C.外括约肌
D.内括约肌
E.膀胱颈部肌肉
It’s widely known that first aid is important and you can save lives if the right action is taken.
A．terribly
B．hardly
C．scarcely
D．rarely
