进行100米赛跑时,某计时员在听到发令枪响后才开始计时,则他晚计了多少时间?声音在空气中的传播速度取340米/秒。
0.294秒
- Father, you promised!
- Well, _______. But it was you who didn't keep your words first. [ ]
A. so was I
B. so did I
C. so I was
D. so I did
农村供电所要按()专业设立兼职培训员,兼职培训员优先选择技术骨干和具有高级工及以上职业资格等级的农电职工。
A、配电运检
B、装表接电
C、营业抄核
D、抄表收费