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【判断题】
对称三相绕组通入对称三相电流时，除产生基波旋转磁动势外，还会产生3次、5次、7次、9次⋯⋯等一序列的奇数次谐波旋转磁动势。()A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】The increase of the number of the students makes the limited computers not ________ to each student.
A.
available
B.
helpful
C.
acceptable
D.
affordable
【单选题】下面()是ftp服务器的地址。
A.
c:\windows
B.
http://192.163.113.23
C.
www.sina.com.cn
D.
ftp://192.168.113.23
【单选题】The increasing number of the students makes the limited computers not ________for each student． [ ]
A.
useful
B.
hopeful
C.
available
D.
suitable
【多选题】what are the things that people need to do on the 5 th day of the 5 th lunar month ?
A.
get up early
B.
making noise
C.
one washes his hands and face
D.
to collect Aige
【单选题】The increasing number of the students makes the limited computers not _____ to each student. [ ]
A.
useful
B.
hopeful
C.
available
D.
suitable
【单选题】下面( )是FTP服务器的地址。
A.
http://192.163.113.23
B.
ftp://192.168.113.23
C.
www.sina.com.cn
D.
c:\windows
【多选题】What are the things that people need to do on the 5th day of the 5th lunar month?
A.
get up early
B.
making noise
C.
one washes his hands and face
D.
to collect Aige
【单选题】下面( )是ftp服务器的地址。
A.
http://192.163.113.23
B.
ftp://192.168.113.23
C.
www.sina.com.cn
D.
c:\windows
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