修筑现代高等级沥青路面用的沥青,都应属于______。 A.凝胶型结构 B.溶—凝

题型:单项选择题

问题:

修筑现代高等级沥青路面用的沥青,都应属于______。

A.凝胶型结构
B.溶—凝胶型结构
C.溶胶型结构
D.固胶型结构

考点:公路工程试验检测员考试材料材料
题型:单项选择题

阅读理解。

     The 2008 National Teacher of the Year gave its prize to Michael Geisen, an American science teacher,

who is thirty-five years old and a forester (护林员). But he decided he would rather work with growing

minds than with growing trees.

     Seven years ago, Michael Geisen got master's degree in teaching and a job at a middle school. He brought

new energy to the science department there. He created school projects, and got parents' support in their

children's work. He always tried to be creative with each activity, and he didn't like using textbooks much.

One girl in his class said he could probably make it interesting to watch grass grow. During lunch, his students

come to his room to talk; get help, visit his turtle (海龟) and sometimes join him in playing the guitar. He

writes songs and develops games about science. He says one of his goals as a teacher is to create people who

will continue to learn throughout their lives.

     The National Teacher of the Year is a professional award (奖) in the United States. The program began in

1952. Each state chooses one teacher as the winner of the state teachers of the year. President George Bush

honored top teachers at the White House. He said that in Michael Geisen's first two years as head of the school

science department, students of his school got high scores on a state science test, and they were still improving.

     At the White House, Michael Geisen said that students are born to be creative, curious and alive, so we need

to really encourage students' creativity and their desire to learn useful skills to face the future world. Our job is

to educate the entire child.

1. From the text, we learn that Michael Geisen _____.

A. is an American writer.

B. has won the National Teacher of the Year twice.

C. wins support from the parents of his students.

D. got a master's degree when he was35.

2. The students of Michael Grisen think that their teacher is _____.

A. serious.

B. friendly.

C. strict.

D. rude

3. Which of the following is TRUE about the National Teacher of the Year program?

A. President George Bush started this program.

B. Each US state will decide one teacher every year.

C. It has been held worldwide each year since 2001.

D. The winners will have a chance to work at the White House.

4. From the passage we know that ______.

A. Michael Geisen won high scores in a state science test.

B. Michael Geisen is a famous scientist.

C. George Bush met Michael Geisen's students at the White House.

D. Michael Grisen is the head of the science department at his school.

题型:单项选择题
某交流电电源电压的瞬时值表达式为u=6sinl00πt(V),则下列说法中正确的是(  )

A.用交流电压表测该电源电压时,示数是6V

B.用交流电压表测该电源电压时,示数是6V

C.用此电源给电磁打点计时器供电时,打点的时间间隔为0.01s

D.把标有“6V 3W”的小灯泡接在该电源上时,小灯泡将被烧毁

题型:单项选择题

自2008年11月1日起,对个人首次购买 90平方米及以下普通住房,契税税率暂统一下调剑1%。 ( )

题型:单项选择题

一轻质弹簧原长10cm,甲乙两人同时用100N的力在两端反向拉弹簧,其长度变为12cm,若将弹簧一端固定,由甲一人用200N的力拉,则此时弹簧长度为()cm,此弹簧的劲度系数为()N/m。

题型:单项选择题

当今国际工程咨询业的两大趋势是( )。

A.企业功能多样化

B.全球化

C.企业规模大型化

D.科技创新

E.专业化

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