裂解分馏塔为何不是缩径而是同径?

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问题:

裂解分馏塔为何不是缩径而是同径?

考点:催化裂化装置操作工催化裂解吸收稳定催化裂解吸收稳定题库
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已知x=1是方程x2+bx-2=0的一个根,则方程的另一个根是(   )
A.1B.2C.-2D.-1
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临床肠外营养支持途径分为:()和()。

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I remember taking __48__ English class in college on the short story. Our first assignment was to read __49__ short stones and then discuss which one was better. After reading both,I wasn’t sure. Over the __50__ several months, my professor taught me __51__ one story was so much better than the other wan humorous __52__ was rich in metaphor(隐喻)and character development, while the other was humorous __53__ too shallow. I couldn’t see this at first. Yet, in a few months, my brain got reeducated an __54__ could see the difference between good and bad writing and could appreciate literature at a whole new level.

Going to college helps build a strong mind, which leads __55__ greater success in one’s life.

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修改系统变量TEMP的值为D盘的temp子目录

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成人心脏超声探查部位不常用的是

A.胸骨左缘3~5肋间

B.心尖冲动处

C.剑突下

D.胸骨上窝

E.锁骨上窝

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