2009版保养制度中规定，JNP6120G-1系列车型二级保养前后桥作业内容包括（）。
A、检查前后桥安装情况
B、检查推力杆、稳定杆
C、检查减震器
D、检查平衡杠
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下面是错误答案，用来干扰机器的。
参考答案：（1）使用前先检查天平的位置是否水平，并用天平箱底的螺丝调节好；（2）用毛刷将天平的两盘，及其他部分清理干净；（3）扭转开关使电源接通，指针摆动，看其摆动是否自然，指针过偏可调节读窗或梁两端...
下列有关砂土类土壤的叙述中，正确的是 ( )
A．土壤中以粗砂和细砂为主
B．土壤黏性大
C．土壤孔隙多
D．土壤通气透水性好
This is the VOA Special English Education Report. A few weeks ago, we talked about the Test of English as a Foreign Language, or TOEFL. A listener in Cambodia named Thida asks if American colleges and universities also accept the IELTS exam. IELTS is the International English Language Testing System. It was developed by the University of Cambridge ESOL examiners. Cambridge ESOL says the test measures true-to-life ability to communicate in English for education, immigration or employment. The IELTS tests listening, reading, writing and speaking skills. It uses a mixture of accents and spellings, including British English and American English. The test is used by government agencies, schools and professional organizations in one hundred and twenty countries. And, yes, that includes the United States. The many American schools that accepted the IELTS can be found on the Web at felts.org. Some schools accept both the TOEFL and the IELTS, but the graduate school at Duke University in Durham, North Carolina, for example, says it prefers the IEITS. The listening and speaking parts are the same for everyone who takes the IELTS, but people have a choice of reading and writing tests -- either academic or general training. The listening test takes thirty minutes. There are forty questions based on a recording. The reading test takes sixty minutes. Students answer forty questions based on three written passages. The writing test also takes sixty minutes. Students have to write two essays. One essay has to be at least one hundred and fifty words long and the other at least two hundred and fifty words. The shorter one is description of something; the longer one has to support and argument. The speaking test takes less than fifteen minutes. The score is based on a recorded talk between the student and a test examiner. And that's the VOA Special English Education Report, writt  en by Nancy Steinbach. If you have a general question for our series, write to special@voanews.com. I'm Barbara Klein.小题1:What does TOEFL stand for?
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1999年我国对HP感染临床诊断达成共识，下列哪项可诊断
A．尿素酶依赖试验
B．免疫学检查
C．悬滴试验
D．HP染色或组织学染色
E．治疗性诊断
阅读理解。
Photographs are everywhere. They decorate (装饰) the walls of homes and are used in stores for sales
of different goods. The news is filled with pictures of fires, floods, and special events. Photos record the
beauties of nature. They can also bring things close that are far away. Through photos, people can see wild
animals, cities in foreign lands, and even the stars in outer space. Photos also tell stories.
Reporting the news through photos is called photojournalism. At times photojournalists tell their stories
through a single picture. At other times, they use a group of pictures to tell a story. Each picture is like a
chapter in a book, which can do more than record the facts. It can also be a strong force for social change.
Jacob Riis was among the first photojournalists. He took pictures of parts of New York City where the
poor lived. Riis believed that poverty (贫穷) caused crime, and he used photos to help him prove his point.
A few years later, the photos of small children working in factories by Lewis Hine shocked the public. Hine's
pictures helped bring about laws to protect such children.
Hundreds of pictures may have to be taken in order to get one or two really good photos. It takes science
to have the photo come out clearly and art to make a photo that has a good design and expresses feeling.
Photojournalists make an actual record of what they see. A photo, however, can be both a work of art and an
actual record. It can record an important event as a beautiful or exciting picture.
As historical and artistic documents (文献), photos can become more important over time. Today
photojournalists still have their pictures appear in newspapers and magazines. They also publish (发表) them
in books and on the Internet.
1. The underlined word "They" in the first paragraph refers to _____.
A. beauties
B. photos
C. goods
D. events
2. The photos of the small children by Hine show us that photos _____.
A. are also works of art
B. are popular ways of reporting news
C. often shock the public
D. can serve as a force for social change
3. What can we learn from the passage?
A. News with pictures is encouraging.
B. Photos help people improve
C. News photos mean history in a sense.
D. People prefer reading news with pictures.
4. The text is mainly about _____.
A. telling the story through picture
B. decorating the walls of homes
C. publishing historical papers
D. expressing feeling through pictures
2014年5月24日，验船师在对一艘在建沿海自卸砂船主机安装检验时发现，该主机未配备气缸安全阀，曲拐箱也未安装防爆门。验船师查阅了该主机的产品证书，发现主机功率为2000kw，气缸直径为220mm。验船师据此认为该主机的安全配置不合法规要求，有可能因气缸超压引发气缸组件损坏或曲拐箱爆炸引发重大机损，遂要求船东跟主机厂家联系，对发现问题进行整改。请问法规对于主机的有关安全配置是如何规定的？（）
A、气缸直径大于220mm的主柴油机，每个气缸盖上应装有安全阀。
B、气缸直径大于230mm的主柴油机，每个气缸盖上应装有安全阀。
C、缸径≧200mm的柴油机，应设有曲拐箱防爆安全阀。
D、缸径≧220mm的柴油机，应设有曲拐箱防爆安全阀。
