sql server2012文件:______文件( 后缀:_______ )、_______文件( 后缀:_______ )、_______文件( 后缀:_______ )
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SQL 语句可使用____________返回唯一不同的值
文凭
A. discover
B. diploma
C. disappear
D. direct
E. disaster
F. disappointed
G. dirty
H. discount
直接
A. discover
B. diploma
C. disappear
D. direct
E. disaster
F. disappointed
G. dirty
H. discount