更多“下列金属单质中熔点最低的是（）”相关的问题
坚持正确的导向，确保教育评价活动有利于促进学生的身心发展，符合教育目的要求称为（）
A.客观性原则
B.科学性原则
C.公平性原则
D.方向性原则
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要录制一段校长在升旗仪式上讲话的音频，不可以使用（）。
A.录音笔
B.扬声器
C.录音机
D.智能手机
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在工程项目目标控制过程中，应当正确处理主动控制与被动控制的关系，应( )。
A．以主动控制为主，被动控制为辅
B．以被动控制为主，主动控制为辅
C．主动控制和被动控制双管齐下
D．两者紧密结合，力求加大主动控制在控制过程中的比例
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起吊重物时，不准长期悬在空中；有重物悬在空中时，（）驾驶人员离开驾驶室或做其他工作。
A.工作繁忙时； B.需要加固捆绑时； C.严禁； D.结束时。
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连接DNA双链之间的化学键是（）。
A.氢键
B.磷酸酯键
C.糖苷键
D.疏水键
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施工单位对进入施工现场的建筑材料、建筑构配件、设备和商品混凝土，必须实行进场二次检验。
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该项无形资产对新华公司2011年利润总额的影响金额为（）万元。
2011年1月1日，新华公司购入一项管理用无形资产，双方协议采用分期付款方式支付价款，合同总价款为2500万元，自2011年12月31日起，每年年末付款500万元，5年付清。假定银行同期贷款年利率为5%。
另以现金支付相关税费30万元。该项无形资产购入当日即达到预定可使用状态，预计使用寿命为10年，采用直线法摊销，预计净残值为零。假定不考虑所得税和其他相关因素的影响。（已知利率为5%，期数为5期的年金现值系数为4.3295，计算结果保留两位小数）要求：
根据上述资料，不考虑其他因素，回答下列问题。
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不属于氟的矿化作用的是
A．降低釉质的溶解性
B．改善牙的形态发育
C．维护口腔缓冲能力，维持菌斑pH
D．促进釉质再矿化
E．增强釉质晶体的抗龋能力
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A . 无人投资B . 算力不足C . 芯片水平不够D . 没有研究成果
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787有几个货仓灭火瓶？（）
A.2个
B.3个
C.4个
D.5个
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领导者要成为管人的高手，就要做到()。
A作为领导者，必须具有表达清楚、准确的自信B在任何情况下，责任都有一个定量，任何一方如果承担过多的责任，另一方就会相应地减少承担等量责任C管理的艺术在于沟通的技巧和真诚D管理就是让大家知道你的规划，理解你的规划，理解你的实施计划和要求
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Urging Americans to take responsibility for their health, Health and Human Services Secretary Tommy Thompson on Tuesday launched a $15 million program to try to encourage communities to de more to prevent chronic diseases like heart disease, cancer and diabetes. The initiative highlights the cost of chronic diseases -- the leading causes of death in the United States -- and outlines ways that people can prevent them, including better diet and increased exercise. 'In the United States today, 7 of 10 deaths and the vast majority of serious illness, disability health care costs are caused by chronic diseases,.' the Health and Human Services Department said in a statement. The causes are often behavioral -- smoking, poor eating habits and a lack of exercise. 'I am convinced that preventing disease by promoting better health is a smart policy choice for future,' Thompson told a conference held to launch the initiative. 'Our current health care system is not structured to deal with the escalating costs of treating diseases that are largely preventable through changes in our lifestyle. choices.' Thompson said heart disease and strokes will cost the country more than $351 billion in 2003. 'These leading causes of death for men and women are largely preventable, yet we as a nation arc not taking the steps necessary for us to lead healthier, longer lives,' he said. The $15 million is slated (计划) to go to communities to promote prevention, pushing for changes as simple as building sidewalks to encourage people to walk more. Daily exercise such as walking can prevent and even reverse heart disease and diabetes, and prevent cancer and strokes. The money will also go to community organizations, clinics and nutritionists who are being aged to work together to educate people at risk of diabetes about what they can do to prevent it and encourage more cancer screening. The American Cancer Society estimates that half of all cancers can be caught by screening, including Pap tests for cervical cancer, mammograms for breast cancer, colonoscopies, and prostate checks. If such cancers were all caught by early screening, the group estimates that file survival rate for cancer would rise to 95 percent.Which of the following is NOT true of chronic diseases in the U. S.?A．They account for 70% of all deaths.B．They are responsible for most of the health care costs.C．They often result in unhealthy lifestyles.D．They are largely preventable.
A.B.C.'D.E.F.G.'H.I.J.K.L.M.N.WhichO.?A．TheyP.B．TheyQ.C．TheyR.D．They
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“皮”本指加工去毛的兽皮，“革”本指带毛的兽皮。（）
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自2009年1月1日起，年应税销售额超过小规模纳税人标准的其他个人按小规模纳税人纳税;非企业性单位、不经常发生应税行为的企业()
A . A、不缴纳增值税
B . B、可选择按小规模纳税人纳税
C . C、一律按小规模纳税人纳税
D . D、参照一般纳税人纳税
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