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【单选题】目前在中小型变频器中普遍采用的电力电子器件是:
A.
SCR
B.
GTO
C.
MOSFET
D.
IGBT
【简答题】完形填空。 Children in the USA like K Day very much. K is short for 1 . March 7 is 2 . On that day 3 children go out in the open air. They 4 their kites with them. Some kites are very big. 5 are small. The...
【简答题】短文填词。 There are different (1)c (俱乐部) in our city. If you want to join them, you have to (必须) (2)a for (申请) a form (表格) first. (3)T (然后) fill in the form (4)w your personal information (个人信息) such as (...
【单选题】党的十九大明确指出,我国社会主要矛盾己经转化为
A.
人民日益增长的美好生活需要和不平衡不充分的发展之间的矛盾
B.
人民日益增长的物质文化需要同落后的社会生产之间的矛盾
C.
人民对于建设先进的工业国的要求同落后的农业国的现实之间的矛盾
D.
人民对于经济文化迅速发展的需要同当前经济文化不能满足人民需要的矛盾
【简答题】补全对话。 M-Mother; J-Jane M: Jane! Jane! It's time to get up. J: 1 M: It's 7:30. J: 2 M: Don't worry, Jane. You can go to school with your father. J: 3 M: He often goes to work by bus. But he is going to...
【单选题】M: Make sure I'm up before you go to work, will you? I've got a quiz at ten. W: I'll try, but when seven o'clock comes around, don't forget you asked me to wake you. Q: What can be inferred from the c...
A.
The woman has to wake the man at 7 o ’ clock.
B.
The woman is not willing to wake the man.
C.
The man has to wake the woman at 7 o ’ clock.
D.
The man has to get up at 10 o ’ clock.
【简答题】一台主机的域名是wwww.hao.com.cn,那么这台主机一定是( )。 A)支持FTP服务 B)支持WWW服务 C)支持DNS服务 D)以上的说法都是错误的
【单选题】在生理条件下合成血红素的限速步骤是合成
A.
胆色素原
B.
线状四吡咯
C.
原叶琳原Ⅸ
D.
尿叶琳原Ⅲ
E.
δ-氨基-γ-酮戊酸
【简答题】一台主机的域名是www.hao.coin.cn,那么这台主机一定是( )
【单选题】在生理条件下合成血红素的限速步骤是合成
A.
胆色素原
B.
δ-氨基-γ-酮戊酸
C.
原卟啉Ⅸ
D.
原卟啉原Ⅲ
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