更多“运用人本原理时应遵循能级原则、动力原则和激励原则。”相关的问题
Eat More, Weigh Less, Live Longer Clever genetic detective work may have found out the reason why a near-starvation diet prolongs the life of many animals. Ronald Kahn at Harvard Medical School in Boston, US, and his colleagues have been able to extend the lifespan (寿命) of mice by 18 percent by blocking the rodent’s (啮齿动物) increase of fat in specific cells. This suggests that thinness—and not necessarily diet—promotes long life in "calorie (热量单位，卡) restricted" animals. "It’s very cool work," says aging researcher Cynthia Kenyon of the University of California, San Francisco. "These mice eat all they want, lose weight and live longer. It’s like heaven." Calorie restriction dramatically extends the lifespan of organisms as different as worms and rodents. Whether this works in humans is still unknown, partly because few people are willing to submit to such a strict diet. But many researchers hope they will be able to trigger the same effect with a drug once they understand how less food leads to a longer life. One theory is that eating less reduces the increase of harmful things that can damage cells. But Kahn’s team wondered whether the animals simply benefit by becoming thin. To find out, they used biology tricks to disrupt the insulin (胰岛素) receptor (受体) gene in lab mice—but only in their fat cells. "Since insulin is needed to help fat cells store fat, these animals were protected against becoming fat," explains Kahn. This slight genetic change in a single tissue had dramatic effects. By three months of age, Kahn’s modified mice had up to 70 percent less body fat than normal control mice, despite the fact that they ate 55 percent more food per gram of body weight. In addition, their lifespan increased. The average control mouse lived 753 days, while the thin rodents averaged a lifespan of 887 days. After three years, all the control mice had died, but one-quarter of the modified rodents were still alive. "That they get these effects by just manipulating the fat cells is controversial," says Leonard Guarente of the Massachusetts Institute of Technology, who studies calorie restriction and aging. But Guarente says Kahn has yet to prove that the same effect is responsible for increased lifespan in calorie-restricted animals. "It might be the same effect or there might be two routes to long life," he points out, "and that would be very interesting."
A. People like to lose weight, but they do not like to eat less. B. People want to go to heaven, but they do not want to die. C. Mice will go to heaven if they lose weight. D. Mice enjoy losing weight.
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葡萄球菌食物中毒2006年10月11日，某市某小学发生学生集体食物中毒，该校设6个年级共30个班，在校学生1482人，10月11日课间餐后，学校陆续有200余人因出现胃肠不适症状到市内10余家医院就诊治疗 。大部分患者以恶心、剧烈反复呕吐、腹痛为首发症状 。之后部分患者出现发热、腹泻伴有头晕、头痛等症状 。患者经抗菌消炎等对症治疗后，病情显著好转，病程2~6d 。
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下列说法都正确的一项是： ①铅笔芯含铅 ②水银是汞 ③黄铜是合金 ④甘油不是油 ⑤纯碱是碱 ⑥干冰不是冰
A．②③⑤⑥
B．①②④⑥
C．②③④⑥
D．①③④⑤
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HXD3B机车通风系统的冷却塔通风冷却 , 用来冷却( ) 和( ) 。
A. 主变压 器油、 主变流器水 B. 主变压 器油、主变流器油 C. 主变压 器水、主变流器水 D. 主变压 器水、主变流器油
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人在下列哪些情况下可引起高血压()
A . A．长期精神紧张
B . B．长期吸烟
C . C．长期焦虑
D . D．长期环境噪音
E . E．长期视觉刺激
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能引起视调节麻痹的药物是（）
A . A.肾上腺素
B . B.筒箭毒碱
C . C.酚妥拉明
D . D.毛果芸香碱
E . E.阿托品
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负责全国银行间市场买断式回购交易的日常监测工作的是（ ）。
A．同业中心
B．中央国债登记结算有限责任公司
C．同业中心与中央国债登记结算有限责任公司
D．中国人民银行
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投标人甲的施工资质为隧道专业承包一级和桥梁专业承包二级，投标人乙的施工资质为隧道专业承包二级和桥梁专业承包一级。投标人甲和乙联合参加某招标项目的投标，在联合体协议书中双方约定，投标人甲承担该招标项目中所有隧道工程和部分桥梁工程的施工，投标人乙承担该招标项目中剩余部分桥梁工程的施工，则该联合体联合后的资质是()。
A、隧道专业承包一级+桥梁专业承包一级B、隧道专业承包一级+桥梁专业承包二级C、隧道专业承包二级+桥梁专业承包一级D、隧道专业承包二级+桥梁专业承包二级
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在Word中，按PageDown键，则屏幕显示向后移动（）
A.一行
B.一页
C.一节
D.一屏
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For this part, you are allowed 30 minutes to write a short essay entitled 'Hard Work, Good Luck and Rare Opportunity' in three or four paragraphs. You should write at least 120 words and base your writing on the outline given below.一般说来，事业成功人士往往都很能干，工作也都很刻苦；但是有才干、工作也刻苦的人，却未必在事业上都会成功。这里是否涉及幸运与机遇的问题。你是否能就“hard work”、“good luck”及“opportunity”这三者，淡几点自己个人的看法。
A.
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A . 出卖路权、矿权,大肆借款,并签订众多不平等条约B . 与列强签订“善后大借款”合同,用盐税作抵押,使列强实现了控制和监督中国财政的愿望C . 基本接受日本提出的严重损害中国权益的“二十一条”要求D . 以各种手段兼并土地,征收苛捐杂税
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锰结核的比表面积高达（）m2/g以上。
A.10000
B.10
C.200
D.5
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肾阳虚弱者中药汤剂宜什么时候服用（）
A.空腹温服B.餐后温服C.餐前温服D.睡前热服
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悬浮固形物用重量分析法测定，即取一定量水样，经（）后，将（）在（）℃下烘干称重。
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