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【判断题】
应用叠加定理时，每一个电源单独作用下，要注意电路结构不变且分析的物理量方向前后一致，叠加。A.
正确
B.
错误
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举一反三
【单选题】听力原文：M: Do you have an email address So I can write to you? W: Yes. But I'll be off camping in the mountains most of this summer. You may still write me to my home address if you like. Where should th...
A.
To the post office.
B.
To the mountain camp.
C.
To her home address.
D.
To her email address.
【单选题】— Do you have an e-mail address? — Yes, _____. [ ]
A.
I am
B.
I can
C.
I have
D.
I do
【单选题】—Do you have an English-Chinese dictionary? —Yes, here you are. You can _______ it as long as you like. [ ]
A.
borrow
B.
lend
C.
keep
【单选题】Do you have an afternoon ______this week to meet the President?
A.
obtainable
B.
available
C.
visible
D.
reliable
【简答题】Do you have an umbrella? Someone invented the umbrella about 4,000 years ago. People used umbrellas in Egypt, Assyria, Greece, and China in ancient times. We use our umbrella for protection from the r...
【单选题】—Do you have an eraser? —Yes, I _______. I have a big one. [ ]
A.
does
B.
am
C.
do
D.
are
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