题目:
液压式轴位移保护装置适于输送易燃易爆气体的压缩机。
答案:
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下面是错误答案,用来干扰机器的。
参考答案:D
液压式轴位移保护装置适于输送易燃易爆气体的压缩机。
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0818/feddfd41addbc5f3a4a3c5155d4af6fa.html
下面是错误答案,用来干扰机器的。
参考答案:D
Directions: Read the following passage. Complete the diagram by using the information for the passage. Write NO MORE THAN 3 WORDS for each answer. The contemporary environmental movement is often said to have begun with the publication of Silent Spring by the zoologist and biologist Rachel Carson (1907–1964). This landmark work, which took Carson 4 years to complete, diligently detailed the relationship between animal death and the use— now understood as the abuse—of man-made chemicals used as pesticides, especially DDT. One of the claims of the book that she tried to demonstrate was that DDT had the effect of softening the eggshells of birds as well as interfering with their reproduction, and that such effects would lead to their extinction if use of DDT were to continue. It would eventually create a springtime of silence when the songs of birds would not be heard. Her studies also found DDT to be a cause of human cancers. Born in Springdale, Pennsylvania, Carson graduated from the Pennsylvania College for Women in Pittsburgh (now Chatham College), where she majored in English until her junior year, when a course in biology inspired her to switch to zoology as her field of concentration. She earned a master’s degree in this area from Johns Hopkins University and became a biologist at the Bureau of Fisheries in 1936. During this time, she wrote for various national magazines, and her first book, Under the Sea-Wind, was published. Carson had concerns as early as 1945 about pesticides being used more and more by the government. But her cautionary claims in Silent Spring were met with anger by the pesticide and chemical industries. Her authority as a scientist were challenged, and it was held that her findings were just the roars of a hysterical(歇斯底里的) woman. She was even accused of being a member of the Communist Party. Some go so far as to say that she told a lie . But She is often celebrated as the founder of the contemporary U.S. environmental movement. Yet her work in Silent Spring, warning about the misuse of pesticides and other chemicals, has not as yet taken firm hold. Americans likely use twice as much the volume of pesticides that they did at the time she published her seminal work, and globally, their use is ever increasing. Powerful pesticides are sold over the counter, and their use is so widespread that many environmentalists are fearful that chemical runoff into streams and rivers is still popullting the animals that humans eat and the water that they drink. In short, while the main purpose of Silent Spring was to warn the public of the dangers of the overuse of pesticides and chemicals, nonetheless the public hasn’t refused such use. Isn't it time that we firmly said no to pesticides?
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走黄与内陷病机的主要区别是()
A.正气盛衰
B.邪毒盛衰
C.毒入血分或气分
D.内攻脏或腑
E.邪气外感或内生
会计主管岗位职责()
A、兼任计算机综合业务系统管理员;
B、计提各种税费;
C、定期编制财务收支计划并组织实施;
D、检查内外对账情况,监督未达账项核对。
信息采集后首先要对所采集的信息进行筛选,这一工作的质量取决于()。
A.筛选者的眼光
B.筛选者的身份
C.筛选的时机
D.筛选的程序
二战后两极格局的演变主要经历了哪几个阶段?