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【单选题】
下列物质属于阴离子表面活性剂的是 ( )A.
硫酸盐类
B.
季铵盐
C.
氨基酸型
D.
醚型
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反馈参考答案：
举一反三
【简答题】根据短文内容，判断正(T) 误(F)。 One afternoon some boys made a lot of noise in class. The teacher got angry. He kept them in the classroom after school. He told them to add all the numbers from 1 to 100 together....
【简答题】The teacher wrote the words with _____________ chalk.
【简答题】Read para 1 in page 4 and do the following exercises • Add punctuations or capitalize the words wherever they are necessary to form direct speech. •1.humor will be important in my class she said •2.he...
【单选题】During my middle school years, I was very allergic to English grammar. 1 , the two incidents I 2 later changed my view about learning English. 3 I think it is really fun to learn English grammar. It o...
A.
However
B.
Besides
C.
Therefore
D.
Instead
【简答题】I. Complete the following sentences by translating the Chinese into English. 1. Terrorist will____________________ ( 不会区分 ) races, nations or regions when they carry out acts of terror. 2. The inventi...
【单选题】网络客户的服务需求有:得到有关产品和服务的详细信息、帮助解决问题、( )和了解全过程信息四部分
A.
建立长久联系
B.
获得售后帮助
C.
获得会员待遇
D.
与企业人员接触
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