问题
判断题
运价不同的物品混装为一件时,按其中运价低的计算。()
答案
参考答案:错
运价不同的物品混装为一件时,按其中运价低的计算。()
参考答案:错
从方框中选择正确的选项,完成短文。(有两个选项是多余的) | |
__1__ me to a daycare facility (日托中心). The teacher there __2__ me to speak and write Chinese and English. When I was five years old, my teacher told my parents that my English was pretty __3__, but my mother found that I was having __4__ with my Chinese. My parents were very worried. They were __5__ that I would forget Chinese, so they sent me to a Chinese school. At the school I __6__ many children like me, and we studied together. I was very lucky to have a very good teacher, Mrs. Ding. She __7__ me a lot. She was very kind and her voice was __8__. She read Chinese stories, poems and essays to us. She taught us __9__ to write Chinese. My Chinese improved __10__. Now I'm happy that I can understand both English and Chinese and speak them very well. |
假设员工关系EMP(员工号,姓名,部门,部门电话,部门负责人,家庭住址,家庭成员,成员关系)如表6-17所示。如果一个部门可以有多个员工,一个员工可以有多个家庭成员,那么关系EMP属于 (41) ,且 (42) 问题;为了解决这一问题,应该将员工关系EMP分解为 (43) 。
表6-17 关系表 | |||||||
员工号 | 姓名 | 部门 | 部门电话 | 部门负责人 | 家庭住址 | 家庭成员 | 成员关系 |
0011 | 张晓明 | 开发部 | 808356 | 0012 | 北京海淀区1号 | 张大军 | 父亲 |
0011 | 张晓明 | 开发部 | 808356 | OOl2 | 北京海淀区1号 | 胡敏铮 | 母亲 |
0011 | 张晓明 | 开发部 | 808356 | 0012 | 北京海淀区1号 | 张晓丽 | 妹妹 |
0012 | 吴俊 | 开发部 | 808356 | 0012 | 上海昆明路15号 | 吴胜利 | 父亲 |
0012 | 吴俊 | 开发部 | 808356 | 0012 | 上海昆明路15 | 王若垚 | 母亲 |
0021 | 李立丽 | 市场部 | 808.358 | 0021 | 两安雁塔路8号 | 李国庆 | 父亲 |
0021 | 李立丽 | 市场部 | 808358 | 002l | 西安雁塔路8号 | 罗明 | 母亲 |
0022 | 王学强 | 市场部 | 808356 | 0021 | 西安太白路12路 | 王国钧 | 父亲 |
0031 | 吴俊 | 财务部 | 808360 | 西安科技路18号 | 吴鸿翔 | 母亲 |
A.1NF
B.2NF
C.3NF
D.BCNF