更多““打破沙锅问到底”的方法在信息加工中属于（）”相关的问题
天然气置换过程中，当含氧量降至（）时，此时关闭放气阀，可以完成该监测点前管道的氮气置换工作。
A.2%
B.3%
C.5%
D.6.5%
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面谈调查法具有问卷的回收率高、灵活性强和资料范围广的特点。()
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无刷直流电动机调速原理，类似于（）电动机
A.一般鼠笼式异步
B.绕线式转子异步
C.交流同步
D.一般永磁直流
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自动加工过程中使用手动干预必须在执行暂停功能后才有效。
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氢氧化钠滴定邻苯二甲酸氢钾，除了可以选用酚酞作指示剂外，还可以用甲基橙作为指示剂。
世界上第一个把圆周率的数值计算到小数点以后第七位的人是（ ）。A.华佗B.王羲之###SXB##
A.华佗
B.王羲之
C.顾恺之
D.祖冲之
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电热器具和组合型器具，当其功率大于200W时，其功率偏差为()
A.+10%
B.+15%或60W
C.-5%/-10%
D.±10%
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The differences in living standards around the world are vast. In 1993, the average American had an income of about $25,000. In the same year, the average Mexican earned $7,000, and the average Nigerian earned $1,500. Not surprisingly, this large variation in average income is reflected in various measures of the quality of life. Changes in living standards over time are also large. In the United States, incomes have historically grown about 2 percent per year (after adjusting for changes in the cost of living). At this rate, average income doubles every 35 years. In some countries, economic growth has been even more rapid. In Japan, for instance, average income has doubled in the past 20 years, and in South Korea it has doubled in the past 10 years. What explains these large differences in living standards among countries and over time The answer is surprisingly simple. Almost all variation in living standards is attributable to differences in countries’’ productivity—that is, the amount of goods and services produced from each hour of a worker’’s time. In nations where workers can produce a large quantity of goods and services per unit of time, most people enjoy a high standard of living; in nations where workers are less productive, most people must endure a more meager existence. Similarly, the growth rate of a nation’’s productivity determines the growth rate of its average income. The fundamental relationship between productivity and living standards is simple, but its implications are far-reaching. If productivity is the primary determinant of living standards, other explanations must be of secondary importance. For example, people might think that labor unions or minimum-wage laws contributed to the rise in living standards of American workers over the past century. Yet the real hero of American workers is their rising productivity. The relationship between productivity and living standards also has great implications for public policy. When thinking about how any policy will affect living standards, the key question is how it will affect our ability to produce goods and services. To improve living standards, policymakers need to raise productivity by ensuring that workers are well educated, have the tools needed to produce goods and services, and have access to the best available technology.
A．Labor unions.B．Minimum-wage laws.C．Rising productivity.D．Favorable public policy.
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甲企业与乙大学研究所合作开发完成一项专利技术，在双方没有约定专利申请权等相关事项时，根据《合同法》的规定，下列关于该项专利技术的申请权表述中不正确的有( )。
A．甲乙共同享有对该项发明申请专利的权利
B．在甲明确放弃其专利申请权时，乙可以单独申请
C．甲不同意申请专利，乙不得自行申请
D．甲转让其专利申请权必须征得乙的同意
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In a typical fuel oil system, the oil is stored in tanks in the double bottom from which it is pumped to _____ and heated.A.a service tankB.a collecting tankC.a sumpD.a settling tank
A.A.aB.aC.aD.a
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患者坚持不在床上睡，坐于走廊，是因为感到床在运动，此症状是（）。
A.妄想 B.幻觉 C.错觉 D.定向障碍 E.人格解体
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下岗失业人员小额担保贷款贷款行按（）向当地财政部门申请贴息资金。
A．月
B．季
C．半年
D．年
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属于体内药物分析样品的是（ ）
A.尿液 B.泪液 C.注射液 D.大输液 E.汗液
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