Our school has a sports meeting _____ October 15th. [ ]
A. at
B. on
C. in
D. for
答案:B
标准的SQL基本查询语句的格式是( )。
A.SELEC..FRO..WHERE
B.SELEC..WHER..FROM
C.SELEC..WHER..GROUP BY
D.SELEC..FRO..ORDER BY
原发性高血压并发症中最严重的是()
A.脑出血
B.呼吸衰竭
C.冠心病
D.肾衰竭
E.眼底出血