更多“道岔在正常转换时，电动转辙机的磨擦连结器应稍有空转。（）”相关的问题
Happiness can be described as a positive mood and a pleasant state of mind. (69)According to recent polls (民 意测试) , sixty to seventy percent of Americans consider themselves to be moderately happy and one in twenty persons feels very unhappy.Psychologists have been studying the factors that contribute to happiness. It is not predictable nor is a person in an apparently ideal situation necessarily happy. The ideal situation may have little to do with his actual feelings. A good education and income are usually considered necessary for happiness. Though both may contribute, they are only chief factors if the person is seriously undereducated or actually suffering from lack of physical needs. The rich are not likely to be happier than the middle-income group or even those with very low incomes. (70)People with college educations are somewhat happier than those who did not graduate from high school, and it is believed that this is mainly because they have more opportunity to control their lives.Yet people with a high income and a college education may be less happy than those with the same income and no college education. Poor health does not rule out happiness except for the severely disabled or those in pain. Learning to cope with a health problem can contribute to happiness. Those with a good sex life are happier in general, but those who have a loving, affectionate relationship are happier than those who rely on sex alone. Love has a higher correlation with happiness than any other factor. It should be noted that people quickly get used to what they have, and they are happiest when they feel they are increasing their level no matter where it stands at a given time. Children whose parents were happily married have happier childhoods yet they are not necessarily happier adults when they grow up. The best formula for happiness is to be able to develop the ability to tolerate frustration, to have a personal involvement and commitment, and to develop self-confidence and self-esteem.
A．have less opportunity to control their livesB．have more opportunity to control their livesC．are not happier than those who have only an education at high schoolD．are much happier than those who did not graduate from high school
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陈独秀、鲁迅、胡适等一代文化先驱，正是吸纳和借助了西方文化，特别是西方文化中的民主、自由、科学思想，才建构了他们的现代文化思想，实现了中国传统文化的现代转型。这启示我们（）
A.文化要发展就应该弃古学西 B.文化要发展就应该兼容并收，海纳百川 C.文化要发展就必须大胆革新 D.文化要发展就应该吸纳和借助西方文化
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悬挂式插花是以什么，在花器上悬挂下垂作为主要造型特征。
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下列关于垄断组织的说法，正确的是（）
A.是第二次科技革命推动的结果 B.卡特尔、辛迪加、托拉斯是其主要形式 C.是对生产关系作了根本性的调整 D.促使资本主义国家加快了侵略扩张步伐
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颜色命令的快捷键是（）
A.CO
B.CL
C.COL
D.COR
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VHF设备的静噪电路信号取自（）
A、功率放大器输出
B、中频放大器输出端
C、低频放大器输出
D、鉴频器的输出
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当事人向商标评审委员会提供书证的，必须提供原件，包括原本、正本和副本。
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A . 必要条件B . 充分条件C . 充要条件D . 无关条件
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成人皮肤的表面积为（ ）
A.1.0～1.5m B.1.5～2.0m C.1.0m D.2.0m
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旗袍制图中关于腰线的说法正确的是（）。
A.原型制图上抬2CM绘制旗袍腰
B.原型制图下降2CM绘制旗袍腰线
C.在原型制图中的腰线绘制
D.原型制图上抬5CM绘制旗袍腰
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为了提高破碎机的破碎效率，对于标准型和中间型圆锥型破碎机两圆锥各段的啮角（）
A.都必须大于两倍与板的摩擦角即α>2ψ其中ψ是摩擦角
B.都必须等于两倍与板的摩擦角即α=2ψ其中ψ是摩擦角
C.都必须小于两倍与板的摩擦角即α<2ψ其中ψ是摩擦角
D.不确定
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港口与航道工程施工总承包二级资质企业，经理应具有()以上从事工程管理工作经历或中级以上职称。
\tA.3年
\tB.5年
\tC.8年
\tD.10年
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男，34岁，咳嗽气促1月入院。体检：左锁骨上2枚淋巴结肿大，大小约1.0cm×1.5cm×1.5cm，活动度尚可。左下肺呼吸音减低。CT提示纵隔淋巴结和腹膜后淋巴结肿大，肝脾正常。颈淋巴结活检：镜下淋巴结结构破坏，见中性粒细胞、嗜酸性粒细胞、浆细胞等浸润，每个高倍视野见0～1个 Reed-Steinberg细胞。该患者最佳治疗方案为
A．MOPP化疗B．ABVD化疗C．CHOP化疗D．ESHAP
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A.单纯扩散B.易化扩散C.继发性主动转运D.原发性主动转运CO2 和 O2 跨膜转运属于
A．
B．
C．
D．
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