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【单选题】
关于在DML语句中使用子查询,下列说法正确的是( )
A.
只能在UPDATE语句和DELETE语句中使用,不能在INSERT语句中使用
B.
可以在UPDATE语句、DELETE语句和INSERT语句中使用
C.
在UPDATE语句中,子查询不能放置在WHERE条件中
D.
在INSERT语句中使用子查询的句法格式为:INSERT INTO 表名1(字段)SELECT字段列表FROM表名2,其中表名1与表名2为同一张表
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【单选题】Utopia: Euphoria. This is Utopia. Visibility at Dixieville is 500m. Visibility is expected to increase to 1500m, in next two hours. Present visibility is m. Visibility is expected to
A.
800, decrease to 200m
B.
2000, decrease to 500m
C.
500m, increase to 1500m
D.
50m, increase to 500m
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【单选题】S1:M.V. Helper, this is M.V. Blue Whale. What is the result of search? Over.S2:M.V. Blue Whale, this M.V. Helper. Sighted persons in water in position 47°N 050°W. Over.S1:M.V. Helper, this is M.V. Bl...
A.
Because they have rescued all survivors.
B.
Because they connot rescue more survivors.
C.
Because they survivors are in bad condition.
D.
Because they hope to return as soon as possible.
查看完整题目与答案
【单选题】S1:M.V. Helper, this is M.V. Blue Whale. What is the result of search? Over.S2:M.V. Blue Whale, this M.V. Helper. Sighted persons in water in position 47°N 050°W. Over.S1:M.V. Helper, this is M.V. Bl...
A.
Having located a lifeboat.
B.
Having sighted a lifeboat.
C.
Having sighted persons in a lifeboat.
D.
Having sighted persons in water.
查看完整题目与答案
【单选题】仪用互感器实际上就是一个铁芯()
A.
变阻器
B.
变换器
C.
变压器
D.
变比器
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【简答题】Is m＞0? (1) |m|/2=2 (2) m3=
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【单选题】Utopia: Gargantua. This is Utopia. Visibility at Oredock is 50m. Visibility is expected to increase to 500m, in next four hours. Present visibility is m. Visibility is expected to
A.
800, decrease to 200m
B.
2000, decrease to 500m
C.
500m, increase to 1500m
D.
50m, increase to 500m
查看完整题目与答案
【多选题】下列哪项不是扁平苔藓口腔表现
A.
糜烂
B.
斑块
C.
大疱
D.
脓疱
E.
皲裂
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【单选题】可见Horner综合征表现的疾病是
A.
上感
B.
COPD
C.
肺炎
D.
哮喘
E.
肺癌
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【单选题】Utopia: Gargantua. This is Utopia. Visibility at Egghaven is 800m. Visibility is expected to decrease to 200m, in four hours. Present visibility is m. Visibility is expected to
A.
800, decrease to 200m
B.
2000, decrease to 500m
C.
500m, increase to 1500m
D.
50m, increase to 500m
查看完整题目与答案
【单选题】Utopia: Androcles. This is Utopia. Visibility at Appleport is 2000m. Visibility is expected to decrease to 500m, in next four hours. resent visibility is m. Visibility is expected to
A.
800, decrease to 200m
B.
2000, decrease to 500m
C.
500m, increase to 1500m
D.
50m, increase to 500m
查看完整题目与答案
相关题目：
【单选题】Utopia: Euphoria. This is Utopia. Visibility at Dixieville is 500m. Visibility is expected to increase to 1500m, in next two hours. Present visibility is m. Visibility is expected to
A.
800, decrease to 200m
B.
2000, decrease to 500m
C.
500m, increase to 1500m
D.
50m, increase to 500m
查看完整题目与答案
【单选题】S1:M.V. Helper, this is M.V. Blue Whale. What is the result of search? Over.S2:M.V. Blue Whale, this M.V. Helper. Sighted persons in water in position 47°N 050°W. Over.S1:M.V. Helper, this is M.V. Bl...
A.
Because they have rescued all survivors.
B.
Because they connot rescue more survivors.
C.
Because they survivors are in bad condition.
D.
Because they hope to return as soon as possible.
查看完整题目与答案
【单选题】S1:M.V. Helper, this is M.V. Blue Whale. What is the result of search? Over.S2:M.V. Blue Whale, this M.V. Helper. Sighted persons in water in position 47°N 050°W. Over.S1:M.V. Helper, this is M.V. Bl...
A.
Having located a lifeboat.
B.
Having sighted a lifeboat.
C.
Having sighted persons in a lifeboat.
D.
Having sighted persons in water.
查看完整题目与答案
【单选题】仪用互感器实际上就是一个铁芯()
A.
变阻器
B.
变换器
C.
变压器
D.
变比器
查看完整题目与答案
【简答题】Is m＞0? (1) |m|/2=2 (2) m3=
查看完整题目与答案
【单选题】Utopia: Gargantua. This is Utopia. Visibility at Oredock is 50m. Visibility is expected to increase to 500m, in next four hours. Present visibility is m. Visibility is expected to
A.
800, decrease to 200m
B.
2000, decrease to 500m
C.
500m, increase to 1500m
D.
50m, increase to 500m
查看完整题目与答案
【多选题】下列哪项不是扁平苔藓口腔表现
A.
糜烂
B.
斑块
C.
大疱
D.
脓疱
E.
皲裂
查看完整题目与答案
【单选题】可见Horner综合征表现的疾病是
A.
上感
B.
COPD
C.
肺炎
D.
哮喘
E.
肺癌
查看完整题目与答案
【单选题】Utopia: Gargantua. This is Utopia. Visibility at Egghaven is 800m. Visibility is expected to decrease to 200m, in four hours. Present visibility is m. Visibility is expected to
A.
800, decrease to 200m
B.
2000, decrease to 500m
C.
500m, increase to 1500m
D.
50m, increase to 500m
查看完整题目与答案
【单选题】Utopia: Androcles. This is Utopia. Visibility at Appleport is 2000m. Visibility is expected to decrease to 500m, in next four hours. resent visibility is m. Visibility is expected to
A.
800, decrease to 200m
B.
2000, decrease to 500m
C.
500m, increase to 1500m
D.
50m, increase to 500m
查看完整题目与答案