单项选择题

“图书”表中有字符型字段“图书号”。要求用SQL DELETE命令将图书号以字母A开头的图书记录全部打上删除标记，正确的命令是

A) DELETE FROM 图书 FOR 图书号 LIKE "A%"
B) DELETE FROM 图书 WHILE 图书号 LIKE "A%"
C) DELETE FROM 图书 WHERE 图书号 = "A*"
D) DELETE FROM 图书 WHERE 图书号 LIKE "A%\
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创建一个名为myteacher的新类，保存新类的类库名称是mylib，新类的父类是Teacher，正确的命令是
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