更多“煤矿中常见的窒息性气体是以下哪一组？（）”相关的问题
In the second paragraph, the word" summit" means"______"
A．award
B．summary
C．highest-point
D．mountain top
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《报告》指出：全面从严治党永远在路上。一个政党，一个政权，其前途命运取决于（）。
A.人心向背
B.发展形势
C.执政环境
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在智慧屏中安装第三方软件，不用机顶盒，也能看CCTV直播。
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关于项目失败下面说法错误的是（）
A . 创业失败就是人生的失败
B . 创业失败是一个项目失败了，但不代表下一项目也会失败，只要是人没有放弃成长和提升，那就不会失败
C . 创业需要投入，包括精力和时间，以及一定的经费。必然要减少社交、游戏、恋爱的时间
D . 创业失败会消沉、迷茫、甚至彷徨，但还不至于无路可走，作为创业者会提前判断承受能力，不顾一切疯狂赌博者一定是极少数的
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承压水是指充满在两个含水层之间的含水层中的重力水。()
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临氢系统的碳钢设备壁温不得超过（）。
A.250℃
B.300℃
C.350℃
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介绍组织结构设计的动态原则，主要包括（）
A.集权和分权平衡原则
B.职权与知识相结合原则
C.环境适应原则
D.弹性结构原则
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试析栝蒌薤白白酒汤、栝蒌薤白半夏汤、枳实薤白桂枝汤的异同点。
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第三篇 Spacing in Animals Flight Distance Any observ...If an animal’s critical distance is penetrated, it will
A．begin to attack.
B．try to hide.
C．begin to jump.
D．run away.
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下列哪项属于高压断路器的开断部分？（）
A.触头系统
B.绝缘件
C.操动能源
D.传动机构
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Passage 1 Human needs seem endless. When a hungry man gets a meal, he begins to think about an overcoat, when a manager gets a new sports car, a big house and pleasure boats dance into view. The many needs of mankind might be regarded as making up several levels. When there is money enough to satisfy one level of needs, another level appears. The first and most basic level of needs involves food. Once this level is satisfied, the second level of needs, clothing and some sort of shelter, appears. By the end of World War Ⅱ, these needs were satisfied for a great majority of Americans. Then a third level appeared. It included such items as automobiles and new houses. By 1957 or 1958 this third level of needs was fairly well satisfied. Then, in the late 1950s, a fourth level of needs appeared; the "life-enriching" level. While the other levels involve physical satisfaction, that is, the need in comfort, safety, and transportation, this level stresses mental needs for recognition, achievement, and happiness. It includes a variety of goods and services, many of which could be called "luxury" items. Among them are vacation trips, the best medical and dental care, and recreation. Also included here are fancy goods and the latest styles in clothing. On the fourth level, a lot of money is spent on services, while on the first three levels more is spent on goods. Will consumers raise their sights to a fifth level of needs as their income increases, or will they continue to demand luxuries and personal services on the fourth level A fifth level would probably involve needs that can be achieved best by community action. Consumers may be spending more on taxes to pay for government action against disease, ignorance, crime, and prejudice. After filling our stomachs, our clothes closets, our garages, our teeth, and our minds, we now may seek to ensure the health, safety, and leisure to enjoy more fully the good things on the first four levels.
Passage 1
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关于应收账款周转率的正确表达是()。
A.通常用来测定企业收回赊销账款的能力 B.反映企业应收账款的变现速度 C.反映企业的管理效率 D.应收账款周转率越高，表明应收账款收回速度越快 E.应收账款周转率越低，说明企业信用状况好
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日本钢铁工业内部结构的特点是（）。
A.炼钢大于炼铁B.炼铁大于炼钢C.炼钢大于轧钢D.采矿大于炼铁
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改革城市卫生服务体系，形成功能合理、方便群众的卫生网络，属于社区健康促进要素中的（）
A.创造支持环境
B.发展社区健康服务
C.建立社区健康促进机构
D.提高社区保健技能
E.社区群众参与
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