若用如下的SQL语句创建一个表student: CREATE TABLE stud

题型:单项选择题

问题:

若用如下的SQL语句创建一个表student: CREATE TABLE student(N0 CHAR(20) NOT NULL, NAME CHAR(8) NOT NULL, SEX CHAR(2) , AGE INT) 可以插入到表中的是______。

A.(‘1031’,‘曾华’,男,23)

B.(‘1031’,‘曾华’,NULL,NUL

C.(NULL,‘曾华’,‘男’,‘23’)

D.(‘1031’,‘NULL’,‘男’,23)

考点:计算机等级考试数据库工程师计算机数据库工程师
题型:单项选择题

下面关于计算机病毒的一些叙述中错误的是( )。

A.网络环境下计算机病毒往往是通过电子邮件传播的

B.电子邮件是个别的通信手段,即使传播计算机病毒也是个别的,影响不大

C.目前放火墙还无法保障单位内部计算机不受带病毒电子邮件攻击

D.一般情况下只要不打开电子邮件及附件,系统就不会感染它所携带的病毒

题型:单项选择题

阅读理解

     For years I wanted a flower garden, but with five children I was too busy to have one. Money was

limited, and so was time. Often one of the children would want something that cost too much, and I

would say,  "Do you see a money tree outside? Money doesn't grow on trees, you know." Finally, when

all five had gotten through high school and college, and had started having their own families, I started

thinking again about having a garden. However, I knew gardens cost money.

     Then, one spring morning on Mother's Day, as I was working in my kitchen, I heard cars drive by and

looked out of the window to see a new tree planted in my yard. I couldn't believe my eyes: it was a money tree! Dollar bills were stuck all over that tree, and there was a note which read: "I owe you eight hours of

digging time. Love, Marvin."

     Marvin, my first son, kept his promise. He dug up a nice ten-by-fifteen-foot bed(花坛,花圃) for me. My other children bought me tools, a sunflower stepping stone(踏脚石) and gardening books. We built

a garden together.

     That was three years ago. My garden is now very pretty, and just what I'd always wanted. When I

go out to weed or tend my flowers, I don't seem to miss my children as much as I once did. It feels as if

they were right there with me. When I think about what my children have done for me, I get tears in my

eyes every time.

     I'm still not sure whether money grows on trees. But I know love does!

1. Why had the author never had a flower garden before?

A. Because she had five children to take care of.

B. Because she didn't have enough time and money.

C. Because her children wanted expensive things.

D. Because her children were going to high school and college.

2. Why doesn't she miss her children as much as she once did?

A. Because she has a big money tree.

B. Because she has a very pretty garden.

C. Because she feels the love of her children in the garden.

D. Because she is busy weeding or tending her flowers.

3. Which of the flowing statements is correct, based on the passage?

A. Money grows on trees only if you plant them with love.

B. The author built a pretty garden after her children had graduated from school.

C. The author actually wanted to have money grow on trees.

D. The children loved their mother so much that they helped her realize her dream.

4. The purpose of this passage is to tell us_________.

A. how to grow you own money tree

B. the story of pretty garden

C. the story of a money tree

D. a story of the love between a mother and her children

题型:单项选择题

根据GB/T19001-2015标准8.3,()对于产品和服务提供的后续过程应是充分的。

A、设计和开发策划

B、设计和开发输出

C、设计和开发输入

D、设计和开发控制

题型:单项选择题

毫针的选择应注意()。

A.长短粗细规格适合病情

B.针身光滑坚韧而有弹性

C.针尖圆利无钩

D.针根不松动

E.针柄无松动

题型:单项选择题

为提高利用日志文件技术进行数据库的恢复效率,可以采用()的方法。

A.断点

B.停止点

C.检查点

D.事务点

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