下面哪一项不属于“夏季四防”的内容()。A、防滑 B、防暑降温 C、防雷电 D

题型:单项选择题

问题:

下面哪一项不属于“夏季四防”的内容()。

A、防滑

B、防暑降温

C、防雷电

D、防汛

考点:安全科学技术安全人机学安全人机学题库
题型:单项选择题

单纯性肾病综合征多见于

A.婴幼儿

B.学龄前儿童

C.学龄儿童

D.成年人

E.老年人

题型:单项选择题

阅读理解

     Since 1984, Philadelphia has been cleaning up its act. One by one, graffiti(涂鸦)-covered walls are

being changed into outdoor art. So far, more than 1,800 murals (壁画) have been painted. Philadelphia

now has more murals than any other American city.

     The walls that were once ugly with graffiti are now covered with beautiful pictures of historical heroes

and modern art, thanks to the Mural Arts Program (MAP). Its work makes schools and public places

attractive, and its citizens are very proud. The program began as part of Philadelphia's Anti-Graffiti

Network. Jane Golden is the MAP's artistic director. "When people ask me what our program is about,"

she says, "I answer them with one word: hope." Each year, the MAP offers youth art programs and

workshops. Some one-time graffiti writers even help paint MAP murals.

     The MAP's work, says Golden, is all about developing a sense of community (社区). When a

neighborhood requests a mural, the MAP works with the people there to develop a message. Some

messages have been "Safe Streets," "Love and Care," and "Peace Walk."

     The MAP receives up to 50 requests for murals each week. Last year, the workers painted 140

murals.

     "The making of a mural enters people's collective memory as an extraordinary, pleasant moment in

neighborhood history" says Golden, who began as a muralist in Los Angeles.

1. What is the Mural Arts Program in Philadelphia aimed at?

A. Helping the young find jobs.

B. Protecting the neighborhood.

C. Fighting against graffiti.

D. Attracting more visitors.

2. How does the MAP decide on the message for a mural?

A. By having discussions with people in the community.

B. By seeking advice from the city government.

C. By learning from the young graffiti writers.

D. By studying the history of the city.

 3. Which of the following words best describes the work of the MAP?

A. Difficult.        

B. Dangerous.        

C. Experimental        

D. Successful.

题型:单项选择题

输煤系统遇()情况应紧急停机。

A、碎煤机内发生有铁件撞击声时;

B、落煤管、滚轴筛、碎煤机发生堵塞时;

C、设备上发生火警或人身伤亡事故时;

D、叶轮给煤机行走轮严重啃轨。

题型:单项选择题

1946年10月,国民党军占领晋察冀解放区首府(),达到向解放区全面进攻的顶点。

A、太原

B、石家庄

C、承德

D、张家口

题型:单项选择题

关于快速进展性牙周炎描述哪项是错误的()。

A.发病年龄在青春期到35岁之间

B.病损呈弥漫性,累及大多数牙

C.有严重及快速的骨破坏,并持续发展下去

D.多数患者具有中性粒细胞功能缺陷

E.有时伴有全身症状

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