影响绝缘油的绝缘强度的主要因素是()。
A.油中含杂质或水分
B.油中含酸值偏高
C.油中氢气偏高
参考答案:A
I really appreciate their ________ you ________ after me while I was ill.
A.to have; looking
B.having; look
C.having; looking
D.to have; look
楼栋跑水时,对电梯如何处置?