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【单选题】
同步发电机励磁系统主要由励磁电源和励磁自动调节两大部分构成,下列励磁系统部件中不属于励磁电源的部件是( )。A.
交流励磁机
B.
励磁变压器
C.
晶闸管可控整流器
D.
励磁系统稳定器
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反馈参考答案：
举一反三
【单选题】Don’t worry. I will ________my younger sister.
A.
take off
B.
take care of
C.
take out
D.
take after
【单选题】Don’t worry, I will ________my younger sister.
A.
takes care of
B.
took care of
C.
take care of
【单选题】—Tommy, you can never let others know what I have told you today. —Don’t worry. I will keep the ______.
A.
secret
B.
money
C.
address
D.
grade
【单选题】—Tommy, you can never let others know what I have told you today. —Don’t worry. I will keep the ______.
A.
address
B.
money
C.
secret
D.
stone
相关题目：
【单选题】Don’t worry, I will ________my younger sister.
A.
takes care of
B.
took care of
C.
take care of
参考解析：
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