摘要:
一、delete 删除的是数据,drop删除的是表,语句如下: 1.删除字段名 --删除一个字段 alter table 表名称 drop column 列名 --删除多个字段 alter table 表名称 drop (列名1,列名2...) 2.删除表 drop table 表名称 3.删除数据 阅读全文
摘要:
1. Now read about another small business. Complete the text with the underlined words in bold from the article on franchising:现在来看看另一家小企业。用加粗线完成文章中关于特 阅读全文
摘要:
Ex1. A manager has sent this memo. Answer the following.一位经理发来了这份备忘录。回答下列问题: 1. who is the memo to? 备忘录是写给谁的? 2. who will be interested in the informa 阅读全文
摘要:
Module2.2 Listening Extract 1 Good morning and thanks for coming. Today I'd like to tell you about the world's largest document management company. Wi 阅读全文