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【单选题】
实现“查询与同系的学生信息(基于自身连接)”的SELECT语句为()A.
SELECT S2.* FROM Student S1,Student S2 WHERE S1.Sname=' '
B.
SELECT S2.* FROM Student S1 JOIN Student S2 ON S1.Sdept=S2.Sdept AND S1.Sname=' '
C.
SELECT S2.* FROM Student S1 JOIN Student S2 ON S1.Sdept=S2.Sdept OR S1.Sname=' '
D.
SELECT S2.* FROM Student S1,Student S2 WHERE S1.Sdept=S2.Sdept AND S1.Sname=' '
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反馈参考答案：
举一反三
【单选题】根据领导生命周期理论,适用于下属成熟度低的情况,由领导者告诉下属应该干什么、怎么干以及何时何地的领导风格是( )
A.
说服型领导
B.
命令型领导
C.
参与型领导
D.
授权型领导
【简答题】下楼时,则应该由主人走在哪,客人在哪
【简答题】粉末水浸液在紫外光灯下显蓝色荧光的是( )A.大青叶 B.番泻叶 C.枇杷叶 D.罗布麻叶A. 1 B. 1 C. 1 D. 1
【单选题】Traditionally, the first firm to commercialize a new technology has benefited from the unique opportunity to shape product definitions, forcing followers to adapt to a standard or invest in an unprove...
A.
identify problems
B.
warn of consequence
C.
explain effects
D.
evaluate solutions
E.
recommend actions
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