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【判断题】
集合X上两个拓扑的交集还是X上的一个拓扑。A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】A smartphone is a __________ that you can use to make phone calls, but also to do other things such as surf the Internet, send emails and edit documents. (device,link,location,network,post,profile,sh...
【简答题】A smartphone is a __________ that you can use to make phone calls, but also to do other things such as surf the Internet, send emails and edit documents.
【简答题】If the thought of keeping __1__ of your schedule online sounds appealing, you have a lot of __2__. Evernote (www.evernote.com) is a free service that allows you to access your tasks and to-do lists fr...
【简答题】If the thought of __1__ your schedule online sounds __2__ , you have a lot of options. Evernote (www.evernote.com) is a free service that allows you to __3__ your tasks and to-do lists from any comput...
【简答题】改错:Mr. and Mrs Zhang all work in our school.
【单选题】某装饰装修工程组织等节拍流水，施工参数如下：M＝5，N＝3，t＝3天，∑tj＝3天，∑td＝4天，则流水工期为（）。
A.
19天
B.
20天
C.
21天
D.
22天
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