电机、电器铭牌标示的电流、电压值都指的是()。
A.最大值
B.最小值
C.有效值
D.无效值
参考答案:C
I don't want to _____ you. I want to _____ football now. [ ]
A. play with; play the
B. play with; play
C. play with; play with
D. play; play the
滑行的害处不包括()。
A、损伤钢轨和线路
B、造成车轮踏面擦伤
C、减少制动距离
D、延长制动距离