用电检查人员到用电客户进行现场检查时,应主动向客户出示什么证件?。
参考答案:
应主动向被检查用电客户出示《用电检查证》。
Tom was made_______ his own clothes by his mother.
A.wash
B.washed
C.to wash
D.washing
设坐标原点为O,抛物线y2=2x与过焦点的直线交于A、B两点,则的值是().
A.-3
B.-1
C.
D.