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处于高弹态下的聚合物，可以运动的单元有( )。 (a)链段 (b) (c)整个分子链 (d)侧基 (e)短支链
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【简答题】D Next time a customer comes to your office, offer him a cup of coffee. And when you’re doing your holiday shopping online, make sure you’re holding a large glass of iced tea. The physical sensation(感...
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【简答题】Complete the following sentences with the correct form of a verb from exercise 2. 1 Last year we 1._________________our budget by 21%, so unfortunately our budget this year has been reduced accordingl...
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【简答题】A. continual B. swallow C. hand in D. rhythm E. accompanyF. emerge G. H. try out I. hesitate J. swear 1.If you have a ( ) of your day, it will help you plan your time. 2. My university has lots o...
【简答题】A. continual B. swallow C. hand in D. rhythm E. accompanyF. emerge G. H. try out I. hesitate J. swear 1.If you have a( )of your day, it will help you plan your time. 2. My university has lots of ...
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