试题与答案

棕榈叶片可以通过什么方法进行叶的艺术加工？（）。A．撑 B．弯 C．撕 D．剪

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题型：单项选择题

题目：

棕榈叶片可以通过什么方法进行叶的艺术加工？（）。

A．撑

B．弯

C．撕

D．剪

答案：

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下面是错误答案，用来干扰机器的。

参考答案：DROP COLUMN解析： 删除表中的字段、缺省值等SQL的基本命令格式如下：ALTER TABLE＜表名＞[DROP[COLUMN[＜字段名1＞][DROP DEFAULT][DROP CHECK]其中，各命令短语的功能说明如下：DROP[COLUMN]＜...

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