数据库概念设计的E-R方法中,用属性描述实体的特征,属性在E-R图中,一般使用如下所 发布时间:2017-05-30 15:37 │ 来源:www.tikuol.com 题型:单项选择题 问题: 数据库概念设计的E-R方法中,用属性描述实体的特征,属性在E-R图中,一般使用如下所列什么图形表示?A.矩形B.四边形C.菱形D.椭圆形
题型:单项选择题 单词拼写。1. My _________ (照片) is on the wall. 2. What's _________ (在……下面) the bed? 3. Where are her _________ (钥匙)? 4. I don't _________ (知道) that. 5. The _________ (数学) book is on the dresser. 6. He _________ (需要) his hat. 7. The CDs _________ (是) in the drawer.8. Does he _________ (有) a tennis racket? 9. _________ (让我们) play with them. 10. They like _________ (西红柿) very much. 查看答案