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【单选题】
串励绕组和他励(或并励)绕组的磁势方向相同的电机,称为( )电机。
A.
积复励
B.
差复励
C.
他励
D.
串励
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举一反三
【单选题】关于体液免疫应答的B细胞，下列哪一项错误
A.
B细胞是浆细胞的前体细胞
B.
B细胞活化后可变为记忆性B细胞
C.
B细胞分为Bl细胞和B2细胞两个亚群
D.
B细胞识别的抗原包括TD-Ag和TI-Ag
E.
B1细胞对TI-Ag应答需要Th细胞辅助
查看完整题目与答案
【单选题】What is business etiquette all about?
A.
Business etiquette is all about treating co-workers and customers with respect and honesty.
B.
Business etiquette is all about showing your politeness to your boss
C.
Business etiquette is all about making people around your happy and relaxing
D.
Business etiquette is all about show how brilliant and considerate you are
查看完整题目与答案
【单选题】关于初次体液免疫应答的说法错误的一项是( )
A.
潜伏期长
B.
生抗体的量少
C.
持续时间短
D.
以IgM和IgG为主
E.
抗原第二次进入机体引起的免疫应答
查看完整题目与答案
【单选题】If you received an English invitation to a formal western banquet but could not attend it, what would be an appropriate action? __________
A.
Ask a friend to attend the banquet for you.
B.
Ask a colleague to phone a refusal.
C.
Accept the invitation but then not attend.
D.
Write a reply informing the host/hostess that you could not attend the banquet.
查看完整题目与答案
【单选题】关于体液免疫应答的描述中哪项是错误的
A.
由 B 细胞介导
B.
接受抗原刺激后发生
C.
由浆细胞合成并释放免疫球蛋白
D.
抗体是主要的效应物质
E.
主要参与清除细胞内寄生的病原体
查看完整题目与答案
【判断题】由于楔键在装配时被打入轴与轮毂之间的键槽内,所以造成轮殻与轴的偏心与偏斜。
A.
正确
B.
错误
查看完整题目与答案
【单选题】If you ________ hard at English, Your English would be good now.
A.
work
B.
worked
C.
works
D.
had worked
查看完整题目与答案
【简答题】In China, safety education is very important now. 46 should students do to keep themselves safe? What are the 47 at school? Take a look. Stampedes (踩踏 , earthquakes and fires are the main accidents at...
查看完整题目与答案
【简答题】完形填空。 Have you heard of the term 'etiquette' and do you know that etiquette is not only a useful word __ 1 __ very useful to understand? Etiquette is not the same in every culture __ 2 __ in every sit...
查看完整题目与答案
【简答题】V . 完形填空: In China, safety education is very important now. 46 should students do to keep themselves safe? What are the 47 at school? Take a look. Stampedes (踩踏 , earthquakes and fires are the main ac...
查看完整题目与答案
相关题目：
【单选题】关于体液免疫应答的B细胞，下列哪一项错误
A.
B细胞是浆细胞的前体细胞
B.
B细胞活化后可变为记忆性B细胞
C.
B细胞分为Bl细胞和B2细胞两个亚群
D.
B细胞识别的抗原包括TD-Ag和TI-Ag
E.
B1细胞对TI-Ag应答需要Th细胞辅助
查看完整题目与答案
【单选题】What is business etiquette all about?
A.
Business etiquette is all about treating co-workers and customers with respect and honesty.
B.
Business etiquette is all about showing your politeness to your boss
C.
Business etiquette is all about making people around your happy and relaxing
D.
Business etiquette is all about show how brilliant and considerate you are
查看完整题目与答案
【单选题】关于初次体液免疫应答的说法错误的一项是( )
A.
潜伏期长
B.
生抗体的量少
C.
持续时间短
D.
以IgM和IgG为主
E.
抗原第二次进入机体引起的免疫应答
查看完整题目与答案
【单选题】If you received an English invitation to a formal western banquet but could not attend it, what would be an appropriate action? __________
A.
Ask a friend to attend the banquet for you.
B.
Ask a colleague to phone a refusal.
C.
Accept the invitation but then not attend.
D.
Write a reply informing the host/hostess that you could not attend the banquet.
查看完整题目与答案
【单选题】关于体液免疫应答的描述中哪项是错误的
A.
由 B 细胞介导
B.
接受抗原刺激后发生
C.
由浆细胞合成并释放免疫球蛋白
D.
抗体是主要的效应物质
E.
主要参与清除细胞内寄生的病原体
查看完整题目与答案
【判断题】由于楔键在装配时被打入轴与轮毂之间的键槽内,所以造成轮殻与轴的偏心与偏斜。
A.
正确
B.
错误
查看完整题目与答案
【单选题】If you ________ hard at English, Your English would be good now.
A.
work
B.
worked
C.
works
D.
had worked
查看完整题目与答案
【简答题】In China, safety education is very important now. 46 should students do to keep themselves safe? What are the 47 at school? Take a look. Stampedes (踩踏 , earthquakes and fires are the main accidents at...
查看完整题目与答案
【简答题】完形填空。 Have you heard of the term 'etiquette' and do you know that etiquette is not only a useful word __ 1 __ very useful to understand? Etiquette is not the same in every culture __ 2 __ in every sit...
查看完整题目与答案
【简答题】V . 完形填空: In China, safety education is very important now. 46 should students do to keep themselves safe? What are the 47 at school? Take a look. Stampedes (踩踏 , earthquakes and fires are the main ac...
查看完整题目与答案