在3sd max中,布尔运算在()。A、复合物体 B、标准几何体 C、粒子系统 D、

题型:单项选择题

问题:

在3sd max中,布尔运算在()。

A、复合物体

B、标准几何体

C、粒子系统

D、摄像机

考点:计算机科学技术3DMAX3DMAX题库
题型:单项选择题

梯形只有一组对边平行且相等.______.

题型:单项选择题

阅读理解。

     Mr. Ma, a famous mental doctor (心理医生) from  Beijing once said at an important meeting, "Now

many young students can have problems with their minds. Some  students become worried because they

have to study very hard. Others have trouble getting on well with  people  around  them like their parents

and classmates. Parents and teachers should care more about this problem."

     Then Mr. Ma gave   some examples.  A  middle  school   studen t from  Xi'an   was doing badly in his

lessons. He thought his teachers and friends often laughed at him, and he became so nervous and worried

that one night he left his home without telling  his  parents. Another student, a 14-year-old schoolgirl from

Shanghai, was very afraid of exams. While she was reading the exam paper, she couldn't think of anything

to write.

     A recent report from a newspaper says  about  18%  of the young students in Shanghai have mental

problems. They often feel worried and very unhappy. Unluckily many of them won't go and ask for help.

Some think they will look stupid if they go to see a doctor. Others won't talk about their secrets.

     At the end of the meeting, Mr. Ma gave some good ideas to young people:

Talk to your parents or teacher often.

Join in group activities.

Try to get on well with the people around you.

Go to see a doctor if you often feel unhappy.

1. The students who often become worried or have trouble getting on with others may have _______.

A. no parents

B. no secrets

C. poor families

D. mental problems

2. Some of those with mental problems won't ask for help because _______.

A. they don't want to tell their secrets to others

B. their parents are too busy to look after them

C. doctors can't help them with the problems

D. they can do with the problems themselves

3. The underlined word "stupid" in this passage means _______.

A. pretty

B. happy

C. not clever

D. not friendly

4. According to the last part, which of the followings is a good idea?

A. It's important for children to live with their parents.

B. It's helpful for people to see doctors every day.

C. It's useful for students to keep quiet in class.

D. It's necessary for young people to have group activities.

题型:单项选择题

韦氏法测定碘值时的加成反应应避光、密闭且不应有水存在。( )

题型:单项选择题

用SQL语言描述“在教师表中查找男教师的全部信息”,以下描述正确的是______。

A.SELECT FROM教师表IF(性别=‘男’)

B.SELECT性别FROM教师表IF(性别=‘男’)

C.SELECT*FROM教师表WHERE(性别=‘男’)

D.SELECT*FROM性别WHERE(性别=‘男’)

题型:单项选择题

异性双胎不育常见于()。

A、山羊

B、奶牛

C、猪

D、马

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