[单选题](231758)在锅炉负荷不改变时，当燃料的挥发分降低，主蒸-我要搜题网

[单选题]若就个体层面而言，人的幸福感取决于其满足感，而满足感又可以由其预期目标而决定。若就社会层面而言，其成员的幸福感受到他们心理参照系的重大影响。因此，处在封闭社会中，由于缺乏与其他社会乃至其他社会成员间的比照，凭借心理守常和习惯定势的作用，其成员反倒容易表现出不低的幸福感。但这无论如何只是一种不宜泛化、神化、绝对化的一面之词，跨越了合理界限缺陷，是忽略了幸福与人们对人生目的和意义的理解。这段文字意在说明( )。
A.在个体层面和社会层面，人的幸福感受不同因素的影响
B.人处于封闭社会中时比处于开放社会中更具幸福感
C.缺乏参照的幸福感是不宜进行泛化、绝对化的
D.经过比较得出的幸福感才是客观真实的

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[多选题]真理和价值在实践中的辩证统一关系，主要体现在___________。
A.成功的实践必然是以真理和价值的辩证统一为前提
B.价值的形成和实现以坚持真理为前提
C.真理必然是有价值的
D.真理和价值在实践和认识活动中是相互制约的

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[判断题] 液压式传感器,在受被测物重力P作用时,液压油的压力增大,增大的程度与P成正比。(中)( )
A.正确
B.错误

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[单选题]托运人或收货人未按规定时间交付运输费用，或交付的转账支票空头，以及属于（）责任发生的银行退票，或发生预付款抵用欠款的，或运输收入进款未按规定时间存缴的，都应当按迟交运输费用处理。
A.承运人
B.旅客
C.托运人、收货人
D.货主

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[判断题]碳化铝、碳化镁遇水后生成乙炔,放出大量热,并引起乙炔燃烧,发生爆炸。( )
A.正确
B.错误

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[单项选择]On the first Earth Day, the U.S. was a poisoned nation. Dense air pollution blanketed cities like Los Angeles, where smog alerts were a fact of life. Dangerous pesticides like DDT were still in use, and water pollution was rampant—symbolized by raging fires on Cleveland’s Cuyahoga River. But the green movement that was energized by Earth Day— and the landmark federal actions that followed it—changed much of that. Today air pollution is down significantly in most urban areas, the water is cleaner, and even the Cuyahoga is home to fish again.
But if the land is healing, Americans may be sickening. Since World War Ⅱ, production of industrial chemicals has risen rapidly, and the U.S. generates or imports some 19 billion kg of them per day. These aren’t the sorts of chemicals that come to mind when we picture pollution—huge plants spilling contaminated wastewater into rivers. Rather, they’re the molecules that make good on the old "better living through chemistry" promise, appearing i
A. indignant
B. skeptical
C. puzzled
D. optimistic

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[单选题]在电缆沟等有限空间作业，应在作业入口处设专责监护人，坚持“先通风、再检测、后作业”的原则，保持通风良好。出入口应保持畅通并设置明显的安全警示标志，夜间应设（）。
A.警示红灯
B.照明灯
C.警示标志
D.标示牌

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[单项选择]

From childhood to old age, we all use language as a means of broadening our knowledge of ourselves and the world about us. When humans first{{U}} (31) {{/U}}, they were like newborn children, unable to use this{{U}} (32) {{/U}}tool. Yet once language developed, the possibilities for human kinds future{{U}} (33) {{/U}}and cultural growth in- creased.
Many linguists believe that evolution is{{U}} (34) {{/U}}for our ability to produce and use language. They{{U}} (35) {{/U}}that our highly evolved brain provides us{{U}} (36) {{/U}}an innate language ability not found in lower{{U}} (37) {{/U}}. Proponents of this innateness theory say that our{{U}} (38) {{/U}}for language is inborn, but that language itself develops gradually,{{U}} (39) {{/U}}a function of the growth of the brain during childhood. There- fore there are critic
A. for
B. from
C. of
D. with

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[判断题]在技术经济分析中，一般以单利计息方法为首选。

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[单项选择]Last year our country hosted the Olympic Games. It is held (41) .Many players (42) , all over the world take part in it. The old Olympic Games began around the year 776BC in Greece and the modern games came from the (43) ones.
The Olympic Games stopped for a long time. But people didn’t (44) them. The first Olympic Games in modern times happened in 1896. They were held in Greece—the games were born in this (45) . In the 1896 games, there were 311 players from just thirteen countries. After that, (46) countries took part in the games.
One of the great competitions (47) not for a medal. It’s the competition among countries to hold the game. To hold the Olympic Games is a great prize (48) a country. Last year, Beijing (49) the 29th Summer Olympic Games. We all felt (50) our great country.

A. forgetting
B. forget
C. forgot

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[多选题]建筑工程系指以新建、扩建、改建的方式所进行的各类房屋建设工程，以及房屋建筑附属或单独使用的各类构筑物。按照建筑类型可将其分为( )。
A.工业建筑
B.民用建筑
C.构筑物
D.公共建筑
E.农村建筑

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[多选题]以下(　　)属于云南地区的民族式茶艺表演内容。
A.白族三道茶
B.藏族酥油茶
C.婺源农家茶
D.纳西族龙虎斗

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[单选题](231758)在锅炉负荷不改变时，当燃料的挥发分降低，主蒸汽温度会()。
A.保持不变
B.降低
C.升高
D.平稳

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[单选题](231758)在锅炉负荷不改变时，当燃料的挥发分降低，主蒸汽温度会()。A.保持不变B.降低C.升高D.平稳

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[单选题](231758)在锅炉负荷不改变时，当燃料的挥发分降低，主蒸汽温度会()。
A.保持不变
B.降低
C.升高
D.平稳