当电网接有较多高压电动机或者较多的电缆线路时，由于它们的绝缘_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题

当电网接有较多高压电动机或者较多的电缆线路时，由于它们的绝缘水平较低，瞬间性的接地故障相对较少，为了保证绝缘不受损坏，为减少单相接地发展成为多重接地故障，宜采用（）系统。

A.中性点直接接地

B.中性点经电容接地

C.中性点经电阻接地

D.中性点经电感接地

答案

参考答案：C

填空题

某年7月上旬，东台市最高气温如下表所示：

日期	1	2	3	4	5	6	7	8	9	10
最高气温（℃）	30	28	30	32	34	31	27	32	33	30

那么，这些日最高气温的众数为 ▲ ℃．

完形填空

Every night, my mother would come to my room, lean down and push my long hair out of the way, then kiss my forehead．
I don't remember when it first started     me --her hands pushing my hair that way. But it did make me annoyed, for they felt work - worn and     against my young skin．Finally, one night, I shouted at her: “Don' t do that any more --your      are too rough！” She didn’t say anything in    ．But never again did my mother close out my day with that     expression of her love．
Time after time, with the     years, my thoughts returned to that night．I'm not a little girl any more．Mom is in her mid - seventies, and those hands I     thought to be so rough are still doing things for me and my
Now, my own children are   . Mom no longer has Dad. It was late on that Thanksgiving Eve, as I went to sleep in the bedroom of my youth, a familiar hand     before stealing across my face to brush the     from my forehead. Then a kiss, ever so      touched my brow．In my    , thousands of times, I     the night my young voice complained.     Mom's hand in my hand, I said how     I was for that night. I thought she'd remember, as I did,     Mom didn't know what I was talking about. She had forgotten — and      —long ago.
That night, I fell asleep with a new     for my gentle mother and her caring hands. And the     I had carried around for so long was nowhere to be found．

B．appreciation