在对象联系图中，表示属性值是单值的是（）-湖北继续教育网网校

首页

普通专升本

成人高考

学位英语

在线刷题

最近学习

最近学习课程

最强大脑 · 3天挑战极限记...

副标题副标题副标题副
最强大脑 · 3天挑战极限记...

副标题副标题副标题副

您现在位置：模拟考场> 湖北自学考试> 专业课> 数据库系统原理> 浏览试题

[单选题]在对象联系图中，表示属性值是单值的是（）

A双箭头b.单箭头c.双线箭头d.双向箭头

收藏查看答案

相关题目

热门试题

1. 1. Women won their present status through struggle sacrifices rather than through men's kindness. Women their supporters have fought in some places continue to fight for the same rights as men. Laws were made to replace local customs which denigrated （诋毁） suppressed women's rights. Women have gained higher positions in the world at all levels: political, economic social. 2.Historically, whether in Hindu, Greek or Roman civilizations women were always minors subject to men. It was only during the Islamic civilization, between 610 661, that the early reforms were undertaken. The reforms gave women greater rights than Muslim women in pre-Islamic Arabia medieval Europe.3.These reforms included greater rights in marriage, divorce inheritance. Women were not accorded with such legal status in other cultures until centuries later. 4. During the middle ages women were enslaved were denied all rights in Europe. In the late 18th century, however, women's status became a subject of political debate. In the 19th century women started their fight for equal rights. In the late 19th century they won the right to vote in various countries in the world. More gigantic steps were taken during the following years. Women gained more economic, social political status in various degrees in different countries. 5. In spite of all the success women still suffer from discrimination at various levels，for example, women work more earn less than men. In addition to that, the majority of the world's poor illiterate are women. The road to real equality is still long.
2. 42．简述曹操诗歌的艺术成就。
3. 原句：In case of（shortage）of iron steel, industry would undergo extreme difficulties in its development. 译文：要是（缺少）了钢铁，工业的发展就会遇到很大困难。以上句子中括号部分的翻译用到的翻译方法是______。
4. Excel 2003中，若在工作表中插入一列，则一般插在当前列的________。(1分)
5. 下列四组海港中，全属于北美洲的是（）

热门试卷