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【单选题】
直流稳压电源由变压器、整流、( )、稳压电路四个部分组成A.
放大
B.
滤波
C.
开关
D.
控制
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反馈参考答案：
举一反三
【单选题】Traditionally, women in China are in red clothes on the wedding day, because red is the ______ of happiness and luck.
A.
logo
B.
brand
C.
symbol
D.
slogan
【单选题】【C5】
A.
think of themselves
B.
think out themselves
C.
think by themselves
D.
think for themselves
【单选题】This question is difficult, let's it . [ ]
A.
think;over
B.
think;about
C.
think;of
D.
think;on
【单选题】What do you _____ this new watch? [ ]
A.
think at
B.
think of
C.
think ove
D.
think hard
【单选题】The flag of China is ____________ and ____________. [ ]
A.
yellow; white
B.
red; yellow
C.
white; red
相关题目：
【单选题】This question is difficult, let's it . [ ]
A.
think;over
B.
think;about
C.
think;of
D.
think;on
参考解析：
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