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【单选题】
维持蛋白质胶体溶液的稳定因素是A.
蛋白质不带电荷
B.
蛋白质分子表面有水化膜和电荷层
C.
蛋白质分子表面的疏水基团相互排斥
D.
蛋白质溶液的黏度大
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反馈参考答案：
举一反三
【单选题】对危险废物的容器和包装物以及收集、贮存、运输、处置危险废物的设施、场所必须?
A.
设置危险废物识别标志
B.
设置生活垃圾识别标志
C.
不用设置识别标志
D.
设置标语标识
【单选题】I want to _______ about the bad service of the hotel.
A.
company
B.
complain
C.
comfortable
D.
cooperate
【单选题】— What do you think of the hotel? —Not bad. You can't find in such a small town. [ ]
A.
a good one
B.
the good one
C.
a better one
D.
the best one
【简答题】Many customers made ____________ (complain)about the bad service the hotel offered.
【简答题】They p______ about the bad food at the hotel yesterday.
【单选题】Only by bringing in new management, I guess, ________ our hotel from bad to worse
A.
we can prevent
B.
we have prevented
C.
can we prevent
D.
have we prevented
【简答题】A bad hotel a terrible holiday.A. makes for
【单选题】They ____ about the bad food at the hotel.
A.
attempted
B.
pursued
C.
struggled
D.
protested
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