Visual FoxPro的“参照完整性”中“插入规则”包括的选择是( )。A.级联

题型:单项选择题

问题:

Visual FoxPro的“参照完整性”中“插入规则”包括的选择是( )。

A.级联和忽略

B.级联和删除

C.级联和限制

D.限制和忽略

考点:计算机等级考试VISUALFOXPRO二级VISUALFOXPRO笔试327
题型:单项选择题

下列关于数0的说法错误的是(   ).

A、0的相反数是0                 A、0的绝对值是0

C、0不能作除数                   D、0除以任何数仍得0

题型:单项选择题

美国学者罗兹·墨菲在《亚洲史》中说:“在许多方面,宋朝在中国都是个最令人激动的时代,它统辖着一个前所未见的发展、创新和文化繁盛期。”下列各项中属于宋朝“创新”表现的是[ ]

A.建立起地方监察机构

B.突破了“市”的时空限制

C.创制了木活字和铜活字

D.出现了新的文学体裁——“词”

题型:单项选择题

有关Meckel憩室以下哪项是正确的()。

A.Meckel憩室是后天获得性的真性憩室

B.Meckel憩室大都有症状,如出血、梗阻等

C.Meckel憩室最常见的并发症为肠梗阻,其次为出血

D.Meckel憩室出血多是由于异位胰腺而产生消化性溃疡

E.疾病行剖腹探查时发现的无症状Meckel憩室,只要病人条件允许,应将憩室切除

题型:单项选择题

在Visual FoxPro中,下列叙述正确的是( )。

A.利用视图可以修改数据

B.利用查询可以修改数据

C.查询和视图具有相同作用

D.视图可以定义输出去向

题型:单项选择题

Five years ago, David Smith wore an expensive suit to work every day. “I was a clothes addict,” jokes. “I used to carry a fresh suit to work with me so I could change if my clothes got wrinkled.” Today David wears casual clothes---khaki pants and sports shirt---to the office. He hardly ever wears necktie. “I’m working harder than ever,” David says, “and I need to feel comfortable.”

More and more companies are allowing their office workers to wear casual clothes to work in the United States. The change from formal to casual office wear has been gradual. In the early 1990s, many companies allowed their employees to wear casual clothes on Friday (but only on Friday). This became known as “dress-down Friday” or “casual Friday.” “What started out as an extra one-day-a-week benefit for employees has really become an everyday thing,” said business consultant Maisly Jones.

Why have so many companies started allowing their employees to wear casual clothes? One reason is that it’s easier for a company to attract new employees if it has a casual dress code. “A lot of young people don’t want to dress up for work,” says the owner of a software company, “so it’s hard to hire people if you have a conservative dress code.” Another reason is that people seem happier and more productive when they are wearing comfortable clothes. In a study conducted by Levi Strauss and Company, 85 percent of employers said that they believe that casual dress improves employee morale. Only 4 percent of employers said that casual dress has a negative impact on productive. Supporters of casual office wear also argue that a casual dress code helps them save money. “Suits are expensive, if you have to wear one every day,” one person said. “For the same amount of money, you can buy a lot more casual clothes.”

小题1:David Smith refers to himself as having been “a clothes addict” because_______.

A.he often wore khaki pants and a sports shirt

B.he couldn’t stand a clean appearance

C.he wanted his clothes to look neat all the time

D.he didn’t want to spend much money on clothes小题2:David Smith wears casual clothes now, because________

A.they make him feel at ease when working

B.he cannot afford to buy expensive clothes

C.he looks handsome in casual clothes

D.he no longer works for any company小题3:According to this passage, which of the following statements is FALSE?

A.Many employees don’t like a conservative dress code.

B.Comfortable clothes make employees more productive

C.A casual clothes code is welcomed by young employees

D.All the employers in the U.S are for casual office wear.小题4:In this passage, the following advantages of casual office wear are mentioned EXCEPT_______.

A.saving employees’ money

B.making employees more attractive

C.improving employees’ motivation

D.making employees happier

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