题目内容 (请给出正确答案)
提问人:网友c********1 发布时间:2023年1月16日 08:12
[单项选择题]

设有关系表:职工(职工号,姓名,领导职工号),其中职工号是主码,领导职工号是外码。当前表中没有任何数据。现在依次向该表中插入如下数据(1) (e1, Tom, e2)(2) (e3, Jerry, null)(3) (null, Foo, null)(4) (e2, Fake, e2)(5) (e1, Ghost, e3)(6) (e4, Who, e1) 则最终该表中有多少行数据( )

A.2B.3C.4D.5

参考答案
十点题库官方参考答案 (由十点题库聘请的专业题库老师提供的解答)
更多“设有关系表:职工(职工号,姓名,领导职工号),其中职工号是主”相关的问题
Windows中在未完成命令情况下关闭对话框,使用命令()或F10。
A.CTRL+F4 B.ALT+F4 C.ESC D.CTRL+F10
点击查看答案
平静吸气末,再尽力吸气所能吸入的气量为
A.肺活量
B.潮气量
C.补吸气量
D.残气量
E.时间肺活量
点击查看答案
VE型分配式喷油泵燃油供给系统主要组成有哪些?是怎样工作的?
点击查看答案

Section B Reading Comprehension (2’×5=10’)

Directions: There is a passage in this section. The passage is followed by some questions or unfinished statements. For each of them there are four choices marked A), B), C) and D). You should decide on the best choice and mark the corresponding letter on the Answer Sheet with a single line through the centre.

注意:此部分试题请在MOOC客观题部分作答。

Passage

Questions11 to 15 are based on the following passage.


Henry Ford, the famous US inventor and car manufacturer, once said, “The business of America is business.” By this he meant that the US way of life is based on the values of the business world.

Few would argue with Ford’s statement. A brief glimpse at a daily newspaper vividly shows how much people in the United States think about business. For example, nearly every newspaper has a business section, in which the deals and projects, finances and management, stock prices and labor problems of corporations are reported daily. In addition, business news can appear in every other section. Most national news has an important financial aspect to it. Welfare, foreign aid, the federal budget, and the policies of the Federal Reserve Bank are all heavily affected by business. Moreover, business news appears in some of the unlikeliest places. The world of arts and entertainment is often referred to as “the entertainment industry” or “show business”.

The positive side of Henry Ford’s statement can be seen in the prosperity that business has brought to US life. One of the most important reasons so many people from all over the world come to live in the United States is the dream of a better job. Jobs are produced in abundance (大量地) because the US economic system is driven by competition. People believe that this system creates more wealth, more jobs, and a materially better way of life.

The negative side of Henry Ford’s statement, however, can be seen when the word business is taken to mean big business. And the term big business -- referring to the biggest companies, is seen in opposition to labor. Throughout US history working people have had to fight hard for higher wages, better working conditions, and the right to form unions. Today, many of the old labor disputes are over, but there is still some employee anxiety. Downsizing -- the laying off of thousands of workers to keep expenses low and profits high -- creates feelings of insecurity for many.


11. The United States is a typical country _____.


A . which encourages free trade at home and abroadB . where people’s chief concern is how to make moneyC . where all businesses are managed scientificallyD . which normally works according to the federal budget
点击查看答案
GSM-R手机卡配备数量:普速旅客列车列车长每乘务组()张,动车组每乘务组按满足短编组动车2张,长编组动车3张,重联动车()张。
A.1、4
B.2、4
C.3、4
D.4、4
点击查看答案
积分配置稽核数据仅限于每月新增的积分数据明细()
点击查看答案
票务罚则按影响程度由重到轻分为票务差错、票务违章、票务事故()
点击查看答案
《产品/竞品对标分析报告》为市场分析阶段的输出。
点击查看答案
436.尖锐湿疣的病原体是
A.HSV
B.HPV
C.HIV
D.EBV
E.HCMV
点击查看答案
甲县的电热毯厂生产了一批电热毯,与乙县的昌盛贸易公司在丙县签订了一份买卖该批电热毯的合同。丁县居民张三在出差到乙县时从昌盛贸易公司购买了一条该批次的电热毯,后在使用过程中电热毯由于质量问题引起火灾,烧毁了张三的房屋。张三欲以侵权损害为由诉请赔偿。下列哪些法院对该纠纷没有管辖权
A.甲县法院B.乙县法院C.丙县法院D.丁县法院
点击查看答案
SPZ-200型配碴整形车最高自行速度是()。
A . A、70km/h
B . B、80km/h
C . C、90km/h
D . D、100km/h
点击查看答案
亲脂性较强,易通过血一脑屏障
A.卡莫司汀
B.氟尿嘧啶
C.环磷酰胺
D.巯嘌呤
E.盐酸阿糖胞苷
点击查看答案
AI(输入)模块用于A-D转换,AQ(输出)模块用于()。
点击查看答案
对于非经营性项目主要是进行()分析。
A.盈利能力
B.偿债能力
C.财务生存能力
D.财务
点击查看答案
测量前,应把零件的被测量表面揩干净,以免有脏物存在时影响测量精度。允许用千分尺测量带有研磨剂的表面,因为它不影响测量精度。
点击查看答案
客服
TOP