属于医疗保险的给付方式有( )
A.物质给付 B.现金给付 C.福利给付 D.疗养给付
参考答案:B
We all know that doing morning exercises ______. [ ]
A. is good for our healthy
B. are good for our healthy
C. are good for our health
D. is good for our health
电压互感器的变比,等于一次额定电压与二次()的比值
A.最高电压
B.额定电压
C.最低电压
D.平均电压