[多项选择]受压构件纵向受力钢筋的作用包括（）。
A. 防止构件突然的脆性破坏
B. 承受可能的弯矩
C. 抵抗剪力
D. 承受压力
E. 承受混凝土收缩和温度变形引起的拉应力

[单项选择]When Dr. John W. Gofman, professor of medical physics at the University of California and a leading nuclear critic, speaks of "ecocide" in his adversary view of nuclear technology, he means the following: A large nuclear plant like that in Kalkar, the Netherlands, would produce about 200 pounds of plutonium each year. One pound, released into the atmosphere, could cause 9 billion cases of lung cancer. This waste product must be stored for 500,000 years before it is of no further danger to man. In the anticipated reactor economy, it is estimated that there will be 10,000 tons of this material in western Europe, of which one table—spoonful of plutonium—239 represents the official maximum permissible body burden for 200,000 people. Rather than being biodegradable, plutonium destroys biological properties. In 1972 the U.S. Occupational Safety and Health Administration ruled that the asbestos level in the work place should be lowered to 2 fibers per cubic centimeter of air, but the effective date of the ruling has been delayed until now. The International Federation of Chemical and General Workers" Unions report that the 2-fiber standard was based primarily on one study of 290 men at a British asbestos factory. But when the workers at the British factory had been reexamined by another physician, 40-70 percent had X-ray evidence of lung abnormalities. According to present medical information at the factory in question, out of a total of 29 deaths thus far, seven were caused by lung cancer. An average European or American worker comes into contact with six million fibers a day. "We are now, in fact, finding cancer deaths within the family of the asbestos worker," states Dr. Irving Selikoff, of the Mount Sinai Medical School in New York. It is now also clear that vinyl chloride, a gas from which the most widely used plastics are made, causes a fatal cancer of the blood-vessel ceils of the liver. However, the history of the research on vinyl chloride is, in some ways, more disturbing than the "Watergate cover-up". "There has been evidence of potentially serious disease among polyvinyl chloride workers for 25 years that has been incompletely appreciated and inadequately approached by medical scientists and by regulatory authorities," summed up Dr. Selikoff in the New Scientist. At least 17 workers have been killed by vinyl chloride because research over the past 25 years was not followed up. And for over 10 years, workers have been exposed to concentrations of vinyl chloride 10 times the "safe limit" imposed by Dow Chemical Company.Notes:plutonium 钚asbestos 石棉polyvinyl chloride 聚氯乙烯The style of the second paragraph is mainly
A. factual.
B. sarcastic.
C. emotional.
D. argumentative.

[单选题]鸦片战争后,首先被外国侵略者直接控制的是( )。
A.中国外交
B.中国内政
C.中国海关
D.中国军事

[单项选择]下列哪块肌肉将颈部分为前外侧部和后部（）
A. 胸锁乳突肌
B. 肩胛舌骨肌
C. 斜方肌
D. 胸骨舌骨肌
E. 斜角肌

[判断题]桥梁是供公路、城市道路、铁路、渠道和管线等跨越江河湖泊、山沟深谷以及其他障碍(如公路、铁路)的架空构造物。
A.正确
B.错误

[单项选择]