盆神经受损时，排尿功能障碍的表现是（）
A.尿失禁
B.尿频
C.尿潴留
D.多尿
E.少尿
参考答案：C
--- Could you tell us ____? ---For about two weeks.
A．how soon you will be back
B．how long you will be there
C．how soon are you going to be back
D．how long are you going to be away
珠江PRS700电源系统配一组500AH光宇蓄电池，则电池的充电电流应设为：（）
A.20A
B.40A
C.50A
D.100A
