标称电压超过交流均方根值（）时容易被触及的裸带电体必须设置遮护物或外罩。
A.105V
B.50V
C.36V
D.25V
参考答案：D
How lovely the dog is! Can you tell me _____? [ ]
A. where did you get it
B. where will you get it
C. where you got it
肝郁脾虚见于（）
A．完带汤证
B．逍遥散证
C．二者均是
D．二者均非
