中性点不接地系统发生单相接地故障时,接地相对地电压()。
参考答案:最低为零
1. He never watches programmes about animals. (就划线部分提问)
__________ __________ does he watch programmes about animals?
2. I saw and heard something in the dark room. (改为否定句)
I __________ see __________ hear anything in the dark room.
3. The girl looks good in red and purple. (保持句意基本不变)
Red and purple __________ good __________ the girl.
4. I can’t decide where I will spend my coming holiday. (保持句意基本不变)
I can’t decide __________ __________ spend my coming holiday.
5. The famous director chose Hepburn to play the lead role of a young princess. (改为被动语态)
Hepburn ________ ________ to play the lead role of a young princess by the famous director.
下列句子的句式与其他三句不同的一项是( )
A 农人告余以春及
B 求人可使报秦者
C 大块假我以文章
D 五亩之宅,树之以桑