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【简答题】
调制解调器,英文名称为( ),它工作在OSI/RM的( )层。
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举一反三
【单选题】听力原文：(A) She is peering through the microscope. (B) She is wearing the eyewear. (C) She is taking off her gloves. (D) She is labeling a sample.
A.
B.
C.
【简答题】讨轮并计算广义二重积分 其中D={(x，y)|xy≥1，x≥1}
【简答题】设 计算二重积分 其中 D={(x,y)|x 2 +y 2 ≥2x}.
【简答题】计算二重积分 其中D是曲线 和直线y=-x围成的区域
【简答题】A．She is older than he is. B．She has been through a similar experience. C．She is a medical student. D．She has a sense of humor.
【单选题】When she had looked through the book briefly, she handed it back to me.
A.
She handed the book to me
B.
She looked through the book
C.
same time
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