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【单选题】
螺纹旋合长度代号分短、中、长三组，分别用字母代替，其中中等旋合长度用（ ）A.
N 代替
B.
S代替
C.
L代替
D.
M代替
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举一反三
【单选题】—Would you like to go picnicking with us today?—______, but it looks like rain.
A.
Yes, I would like
B.
I'm going to
C.
Sorry, I don't want to
D.
Well, I'd like to
【简答题】图示各电路在换路前都处于稳态,换路后电流i的初始值为 ,稳态值为
【单选题】听力原文：W: It looks like rain. Here take my raincoat. M: Thanks all the same, but I have an umbrella in my office. Q: Why dose the man not take the raincoat? (4)
A.
He doesn't think it will rain.
B.
He doesn't borrow things.
C.
He has an umbrella.
D.
He also has a raincoat.
【简答题】图示各电路在换路前都处于稳态,换路后电流i的初始值为 ,稳态值为
【单选题】It looks like rain, so you’d better ______ without an umbrella.
A.
go
B.
not to go
C.
going
D.
not go
【单选题】It looks like rain. You______go out and watch TV at home.
A.
are better not to
B.
had better not
C.
wouldn't better to
D.
had not better
【单选题】听力原文：M: It looks like rain. Here, take my umbrella. W: Thanks anyway, but I have a raincoat in my ear. Q: Why doesn't the woman take the umbrella? (13)
A.
Because it stopped raining.
B.
Because she already has an umbrella.
C.
Because she is staying home.
D.
Because she has a raincoat.
【简答题】图示各电路在换路前都处于稳态,换路后电流i的初始值为 ,稳态值为
【单选题】听力原文：M: It looks like rain. Here, take my umbrella. W: Thanks anyway, but I have a raincoat in my car. Q: Why doesn't the woman take the umbrella? (8)
A.
Because it stopped raining.
B.
Because she already has an umbrella.
C.
Because she is staying home.
D.
Because she has a raincoat.
【简答题】图示各电路在换路前都处于稳态,换路后电流i的初始值为 ,稳态值为
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