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【单选题】
What is the author's attitude in this article?
A.
We should ban the fireworks in all states in US.
B.
Children can easily been injured in fireworks display.
C.
Americans should enjoy the freedom of using fireworks as much as they like.
D.
US government should not totally ban the firework market, but better regulate it.
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举一反三
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【判断题】为了有明显区别,并列安装的同型号开关应不同高度,错落有效。
A.
正确
B.
错误
【判断题】为了有明显区别,并列安装的同型号开关应不同高度,落有致。
A.
正确
B.
错误
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【单选题】在SQL Server 2008中,常常会发生数据库数据过大的情况,此时则需要对表进行处理,通常可采用人工分割表的方法优化性能。下列有关分割表的说法,错误的是( )。
A.
水平分割后,得到的子表结构相同
B.
水平分割后,查询表中所有数据时需要使用JOIN操作
C.
垂直分割后,所有表中均需保留原有表的主码
D.
当查询表中所有数据时,使用分割表方法会增加查询表达式的复杂度
【判断题】为了有明显区别,并列安装的同型号开关应不同高度,错落有致。
A.
正确
B.
错误
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【单选题】卡耐基认为一个人的成功,越有()取决于知识和技能,()取决于沟通!
A.
30%,70%
B.
15%,85%
C.
40%,60%
D.
20%,80%
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