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【判断题】
通常所说的B TO C模式,指的是企业与企业之间的电子商务
A.
正确
B.
错误
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参考答案:
举一反三
【简答题】I tell them that learning isn't all about finding the right answers. It is more important to ask the right questions. This is a lesson which we can take into the world with us
【单选题】关系数据库是(65)的集合,它由一个或多个关系模式定义。
A.
字段
B.
C.
元组
D.
【单选题】You and I both know that candy isn't good for our teeth, so why do we continue to eat it?
A.
1
B.
2
C.
3
D.
4
【单选题】From the text, we know that the sun is a star, isn't it?
A.
Yes, it is.
B.
No, it isn't.
C.
Yes, it isn't.
【判断题】SQL Server中的数据表是一个重要的数据库对象,表定义为列的集合。
A.
正确
B.
错误
【判断题】表定义是一个列集合。
A.
正确
B.
错误
【单选题】The financial situation isn't bad yet, but we believe that we have some vital information and, if it is correct, unemployment will soon become a serious problem. What do we know about the financial si...
A.
It won't change.
B.
It will become a serious problem.
C.
It is not bad now.
D.
It will improve.
【单选题】具有抑制体液免疫和细胞免疫功能的T细胞是
A.
Tc 细胞
B.
Ts细胞
C.
TH1细胞
D.
TH2细胞
E.
Ti细胞
【单选题】表定义是一个()。
A.
数集合
B.
项集合
C.
列集合
D.
字符串集合
【单选题】Michelle Obama told the audience not to “ let anyone ever tell you that this country isn't great, that ____ we need to make it great again.”
A.
somehow
B.
somewhat
C.
somewhere
D.
otherwise
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