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【简答题】
练习视图的创建方法: CREATE VIEW 视图名(列1,列2...) AS SELECT (列1,列2...) FROM ...; 创建视图1,查询内容为:查询读者表女读者信息。
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皮皮学刷刷变学霸
举一反三
【单选题】Section B Directions: There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A, B, C and D. You shoul...
A.
whether the experimented treatments should be compared against local standards
B.
whether the experimented treatments are shown to be effective
C.
when local communities will be able to carry out their own research projects
D.
the prohibitive costs involved
【简答题】Section B Directions: There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A), B), C) and D). You s...
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