更多"[单选题]26. All living organisms, ____"的相关试题:
[单选题] UNIQUE 惟一索引的作用是 ( )
A.保证各行在该索引上的值都不得重复
B.保证各行在该索引上的值不得为 NULL
C.保证参加惟一索引的各列,不得再参加其他的索引
D.保证惟一索引不能被删除
[单选题]12. Living in the central Australian desert his problem, _____ obtaining water is not the least.
A.for which
B.to which
C.of which
D.in which
[判断题]主键被强制定义成NOT NULL和UNIQUE。
A.正确
B.错误
[单选题]There is something (unique) about rock and roll that attracts me. 以下哪个选项可以同义替换括号里的内容？
A.special
B.difficult
C.challenging
D.similar
[单选题]250. Living in the western part of the country has its problem, _____ obtaining fresh water is not the least.
A.with which
B.for which
C.of which
D.which
[单选题]The girl has been living (alone) since her parents died.
以下哪个选项可以同义替换括号里的内容？
A.longly
B.along
C.in herself
D.on her own
[单选题]A:Are you used to living here? B：Somewhat. What does “SOMEWHAT” mean in the above dialogue?
A.anyway
B.whatever
C.however
D.to some degree
[单选题]The old lady has been living(____)in Beijing since 2010.
A.in her own
B.by her own
C.at her own
D.on her own
[判断题]The girl has been living (____)since her parents died.此处空可以填：on one’s own.
A.正确
B.错误
[单选题]35. _____ in an atmosphere of simple living was what her parents wished for.
A.The girl was educated
B.The girl educated
C.The girl’s being educated
D.The girl to be educated
[判断题]Oracle支持5种类型的约束：not null、unique、check、primary key、foreign key。
A.正确
B.错误
