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【单选题】
关于数据的更新操作,正确的是( )A.
数据的更新操作包括对数据的插入、删除，不包含修改
B.
数据插入操作的结果不会违反完整性约束
C.
数据更新操作的结果不会违反完整性约束
D.
数据删除操作如果没有where子句，则表示删除表中所有的
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反馈参考答案：
举一反三
【简答题】try to match
【简答题】Michel is a young girl who works for the police 21 a handwriting expert. She has helped 22 many criminals by using her special talents When she was four, Michel was already 23 interested in the ...
【多选题】What are the minimum requirements for police recruits?
A.
at least 20 years old the day of the written test
B.
a U.S. Citizen
C.
a permanent resident alien with an application for U.S. citizenship
D.
at least a college degree from a US college
【单选题】What does the woman hope the man to do?
A.
To report the driver to the police.
B.
To ask for some compensation from the driver.
C.
To go in search of the driver.
D.
To be more careful next time.
【单选题】体型过胖体和过瘦体,在服装材质的选择上,适合( )
A.
精纺呢绒、丝绒针织面料
B.
毛、麻面料、各种化纤混纺面料、皮革、牛仔面料
C.
膨体大衣呢、裘皮、 各种粗纺毛呢、起绒类面料
D.
高弹性、强伸缩性的氨纶织物
【简答题】try to match
【单选题】The police are still investigating what might be ___________ for the fire.
A.
lit
B.
blamed
C.
put
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