水利水电施工企业汛期施工,应重点对现场()等部位和环节实施安全防范措施。
A.施工用电
B.垂直运输设备
C.边坡基坑支护
D.宿舍、办公室等临时设施
参考答案:A, B, C, D
如果加在某定值电阻两端的电压从6V升高到10V,通过该电阻的电流变化了0.1A,则该电阻的电功率变了 。
— Hi, Torry, can I use your computer for a while this afternoon?
—Sorry. .
A.It’s repaired
B.It has been repaired
C.It’s being repaired
D.It had been repaired