皮皮学，免费搜题
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【判断题】
旋转磁场的方向是由三相绕组中电流相序决定的,若想改变旋转磁场的方向,只要改变通入定子绕组的电流相序,即将三根电源线中的任意两根对调即可。A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Only the female mosquito bites because ______.
A.
the male mosquito doesn't have the ability
B.
she needs blood to lay eggs
C.
female mosquitoes are stronger than male
D.
male mosquitoes are more friendly to people
【简答题】大豆磷脂的生物学功能有哪些
【多选题】图画书的功能有哪些?
A.
获得最初的文学艺术的启蒙
B.
图画书的插画可以使孩子在心中培育故事形象,为孩子的阅读提供帮助
C.
图画书在补充丰富儿童还没有发展起来的想象力方面,具有巨大的作用
D.
图画书让儿童享受阅读的乐趣
【单选题】—Have you ever been to the Palace Museum? —__________. I hope to visit it soon. [ ]
A.
No, I have
B.
Not yet
C.
Yes, he has.
D.
No, never
【单选题】Sofar, __________soup and roast chicken.
A.
we’ve been making
B.
we ’ ve made
C.
we had been making
D.
we had made
【简答题】细胞内4种主要生物大分子单体的碳骨架与功能团各有哪些特征？哪些生物学功能？
【单选题】I expressed hope ______ they would come to visit China again.
A.
that
B.
as
C.
although
D.
whether
【简答题】大学的基本功能有哪些?
【单选题】Sofar,howlonghastheShanghaiWorldExpobeenon?
A.
For20days.
B.
Foramonth.
C.
Forfourweeks.
D.
Forabout50days.
【简答题】Sofar,we’ve______(成功)insavingthousandsofpeopleiner.
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