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【单选题】
胶体区别于其他分散系最本质的特征是A.
外观澄清透明
B.
胶体有丁达尔效应
C.
不稳定
D.
分散质粒子直径在10 -9 --10 -7 m之间
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【简答题】亚病毒因子有哪些类?各自有何特点?
【简答题】亚病毒因子有哪些类,各有何特点?
【单选题】At the world's summit, opinions were still ____ as how to effectively stop the global warming. There were clear ____ of different interests among some of the major carbon emitters.
A.
divided, manifestations
B.
dividing, shows
C.
separated, exhibitions
D.
separating, displays
【简答题】26 Why is Hiroko feeling more positive about tutorials now? A She finds the other students ’ opinions more interesting. B She is more of a contribution. C The tutor includes her in the discussi...
【简答题】亚病毒因子有哪些类，各有何特点?
【简答题】Word-formation Directions: Complete each of the following sentences with a word derived from the one given in the brackets. Write your answers on the Answer Sheet. 1. It is believed that fortune-telle...
【简答题】为什么中国的新民主主义革命必须把、封建主义、官僚资本主义作为对象？
【单选题】张某,男,43岁,患十二指肠溃疡10余年,因反复上腹饱胀不适1个月,大量呕吐,呕吐宿食1天就诊,该病人可能出现的并发症是
A.
出血
B.
消化道穿孔
C.
幽门梗阻
D.
贲门梗阻
E.
胃癌
【多选题】关于合同的变更,下列哪些命题是错误的? ( ) 。
A.
合同变更，必须双方当事人协商一致
B.
当事人对合同变更的内容约定明确的，推定未变更
C.
严格意义的合同变更，包括主体的变更
D.
主合同变更，应该取得保证人同意才能发生
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