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【单选题】
在体检登记checklistlist中,为保健号增加主键约束使用的语句为( ):
A.
ALTER TABLE checklist ADD  PRIMARY KEY (cno)
B.
ALTER TABLE  checklist ALTER cno set  PRIMARY KEY
C.
ALTER TABLE checklist ALTER  PRIMARY KEY (cno)
D.
ALTER TABLE checklist ADD  cno  PRIMARY KEY
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参考答案:
举一反三
【判断题】Mr. Fisher presented the Treasurer's Report, which was then unanimously approved.
A.
正确
B.
错误
【单选题】()于1929年10月在重庆创办了重庆第一所高等学校——重庆大学。
A.
杨森
B.
刘湘
C.
潘文华
D.
蒋介石
【单选题】There was a smile of contentment on the teacher’s face when he saw the students’ performance in the speech contest.
A.
irony
B.
confusion
C.
satisfaction
【单选题】Look at the woman in a yellow coat. She's my teacher. She teaches (教) me English She is a good teacher. Her name is Wang Li. Her bike is red. It's under the tree. Her brother Wang Dong is in a black j...
A.
True
B.
False
【单选题】虚拟技术与传统的模拟技术相比,优点是()
A.
可以身临其境
B.
更加生动、形象
C.
多种技术综合在一起
D.
更加逼真、现实
【判断题】马克思和凯恩斯都认为资本主义会有生产过剩问题。()
A.
正确
B.
错误
【简答题】完形填空。 There is 1 old woman in America. She 2 children at all. But she likes 3 . She has black cats and white cats. She has 4 cats and baby cats. So the children like to come to 5 house. They play with...
【单选题】墙体模板高度较大又不能分段支设时,应在浇筑的一侧留设( )。
A.
浇注孔
B.
振捣孔
C.
清理孔
D.
门子板
【判断题】插入图块时,插入的对象既能在X、Y方向等比例放大或缩小,也能实现X、Y方向的不同比例的缩放。
A.
正确
B.
错误
【单选题】From the smile of the teacher’s face, we know she _________ the results in the exam.
A.
is pleased with        
B.
is angry with          
C.
is worried about
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