测定涂料的遮盖力要求进行两次,两次结果之差不大于平均值的(),否则,必须进行重新测定

题型:单项选择题

问题:

测定涂料的遮盖力要求进行两次,两次结果之差不大于平均值的(),否则,必须进行重新测定。

A、5%

B、6%

C、7%

D、8%

考点:桥隧工考试中级桥隧工中级桥隧工题库
题型:单项选择题

I can’t remember the date when I started collecting litter. But it was when I got tired of seeing litter near my home and realized that nobody else was going to pick it up.

I live close to a forest in Ohio, America. I can walk there within three minutes! I used to love going there to play with my dog. But one day there was so much litter there that I became very unhappy. I decided to clean up the forest.

I made my first trip to clean the forest one afternoon. I took a big black rubbish bag with me. Ten minutes later, my bag was full of cans, bottles, broken glass and newspapers.

Since that first trip three years ago, I’ve been to the forest four times a year to pick up litter. I’m often there for three hours. It makes me feel great to do something for the environment.

After each trip, I look at all the litter I’ve found. If any of it is recyclable(可回收的),I’ll keep it. I can’t understand why people drop litter. But I will keep picking it up until they stop dropping it.

I know I can only do a small bit to help the earth, but I still think it is important.

小题1:When did the writer begin to collect litter?

A. When he was very young.

B. After his home moved to a new place.

C. When he got tired of seeing litter near his home.

小题2:Where does the writer live?

A. He lives in a forest.

B. He lives in a place with much litter.

C. He lives near a forest.

小题3:The writer collects litter________.

A. in order to make the place clean

B. in order to make fun

C. in order to make money

小题4:Where does the writer collect litter?

A. In the forest      B. In the street         C.  In the park.

小题5:From the passage we infer(推断) __________

A.the writer always collects a lot of litter

B .the environment will be more beautiful if everyone tries to protect it.

C. the writer will go on collecting litter.

题型:单项选择题

温 * * 与网友在线交流时说:现在影响我们整个社会进步的,我认为最大的是两个方面,一是社会的诚信,一是政府的公信力。 * * 一针见血地道出    

A.社会和政府要做到诚信比较困难

B.我们要认识到诚信对社会进步的重要性

C.诚信是社会和政府的事,与青少年无关

D.提升政府的公信力是目前政府的中心工作

题型:单项选择题

19世纪60年代,火烧我国皇家园林圆明园的侵略军是[ ]

A、英军

B、英法联军

C、八国联军

D、日军

题型:单项选择题

The pilot,(飞行员) whether ______ or on purpose, made the plane do a sharp turn.(急转弯)

A.by accident

B.at times

C.suddenly

D.at once

题型:单项选择题

鳃裂瘘()。

A.外瘘口位于颈前正中线稍偏一侧,可随吞咽运动而移动,内瘘口位于舌骨孔

B.瘘口常位于颌下区

C.瘘口位于左锁骨上与胸骨交界处

D.外瘘口多位于胸锁乳突肌前缘,内瘘口位于外耳道软骨段、扁桃体窝、梨状窝

E.瘘口位于颈前正中或偏一侧

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