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【多选题】
个体心理发展的一般特点是( )。
A.
连续性与顺序性
B.
阶段性
C.
个别差异性
D.
不均衡性
E.
关键性
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A.
触发器是自动执行的
B.
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C.
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D.
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A.
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B.
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C.
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D.
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E.
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A.
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B.
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C.
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D.
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A.
正确
B.
错误
【单选题】下列关于触发器描述错误的是( )。
A.
一个表在相同的触发事件和相同的触发时间只能创建一个触发器。
B.
触发事件为INSERT,触发时间为AFTER的触发器只能有一个
C.
一个表在相同的触发事件上可以创建两个触发器
D.
触发器可以显示调用
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A.
提高数据的检索速度
B.
强化完整性约束
C.
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D.
触发器可以实现对数据库中的相关表的级联更改
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