* * 破裂的表现是（）。
A.尿滴血
B.膀胱膨胀
C.排尿困难
D.会阴部血肿
E.尿外渗
参考答案：A, B, C, D, E
The head of the company promised to deal with matters of this sort _____he returned to his office．
A．until
B．while
C．by the time
D．the moment
交流接触器常采用的灭弧方法是（）灭弧、（）灭弧。
