皮皮学，免费搜题
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【单选题】
下列哪项活动是数据挖掘任务( )A.
根据性别划分公司的顾客
B.
根据可赢利性划分公司的顾客
C.
计算公司的总销售额
D.
使用历史记录预测某公司未来的股票价格
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反馈参考答案：
举一反三
【多选题】关于软膏剂基质的正确表述为（ ）。
A.
油脂性基质涂于皮肤形成封闭性油膜，可促进皮肤水合作用
B.
遇水不稳定药物应选择乳剂型基质
C.
油脂性基质以凡士林最为常用
D.
液状石蜡属于类脂类基质
E.
油脂性基质加入表面活性剂可增加吸水性
【单选题】If you've been joining in chat room conversation, or trading e-mail with Web pals, you have became one of the millions who write in a special short form. of English. And you've got a sense of humor ab...
A.
you have to speak fast and fluently
B.
you should speak with wit and humor
C.
one should pay much attention to the use of exact words
D.
you have to express your ideas in a brief way
【简答题】阅读理解 If you've been joining in chat room conversation, or trading e-mail with your e-pals, you have become one of the millions who write in a special short form of English. And you've got a sense of h...
【多选题】If you ever get involved in a chat room conversation that makes you feel uncomfortABle or in danger, you can ().
A.
exit at once
B.
tell a parent or other adult
C.
report it to an appointed website
D.
accuse it
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