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【简答题】
什么是液体的粘性?常用的粘度表示方法有哪几种?说明粘度的单位。
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举一反三
【简答题】I remember Susan left ______a very cold morning of January.
【单选题】I remember Susan left ______a very cold morning of January.
A.
in
B.
on
C.
at
D.
from
【单选题】听力原文：George: Hi, Susan, I was wondering if you're free tonight. Susan: Well, George, I need to see my professor at four, and then I'm going to the supermarket, but I guess yes, I am. Why do you ask? G...
A.
Visiting her professor.
B.
Having dinner with the man.
C.
Going shopping.
D.
Having no plan at that moment.
【简答题】在Windows“附件”中的“记事本”程序创建的文件的默认扩展名是_______。
【简答题】设 是两个互不相容的随机事件,且知 则 .
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