【单选题】从"图书"表中查找出"计算机"类定价最高的前两条记录,正确的SQL命令是
A.
SELECT TOP 2 * FROM 图书 WHERE 类别="计算机" GROUP BY 定价
B.
SELECT TOP 2 * FROM 图书 WHERE 类别="计算机" GROUP BY 定价 DESC
C.
SELECT TOP 2 * FROM 图书 WHERE 类别="计算机" ORDER BY 定价
D.
SELECT TOP 2 * FROM 图书 WHERE 类别="计算机" ORDER BY 定价 DESC
【简答题】The front side of the house has a(n) _____ (对称的)arrangement of windows and doors, with the main door in the center, a side door and two windows on each side.
【简答题】The front side of the house has a(n) _________ (symmetrical) arrangement of windows and doors, with the main door in the center, a side door and two windows on each side.
【单选题】Remember to do this in time of H1N1 --- constantly the windows to let fresh air enter and move around inside, and avoiding the access to the crowds, a necessity everyday.
【单选题】从"图书"表中查找出"计算机"类定价最高的记录对应的图书编号,正确的SQL命令是:
A.
SELECT TOP 1 图书编号 FROM 图书 WHERE 类别="计算机" GROUP BY 定价
B.
SELECT TOP 1 图书编号 FROM 图书 WHERE 类别="计算机" GROUP BY 定价 DESC
C.
SELECT TOP 1 图书编号 FROM 图书 WHERE 类别="计算机" ORDER BY 定价 ASC
D.
SELECT TOP 1 图书编号 FROM 图书 WHERE 类别="计算机" ORDER BY 定价 DESC
【单选题】The front side of the house has a(n) ________ arrangement of windows and doors, with the main door in the center, a side door and two windows on each side.
【简答题】数字信号的特征是( )。 2、傅里叶变换的四种形式( ),( ),( )和( )。
【判断题】思想道德素质和法治素质,是思想政治素质、道德素质和法治素质的有机融合。