更多“光电检测器的功能是实现光信号转换成电信号。”相关的问题
单独制定人力资本战略的优点不包括（）。
A . 不依赖企业集团总体战略
B . 可以针对某个具体问题或主题而独立制定
C . 可以在其他方面计划、政策和活动中强调人力资本的重要作用
D . 影响人力资本战略整体措施
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具有中医妇科学雏形的是（）
A.秦汉时期 B.春秋战国时期 C.隋唐五代时期 D.明代 E.三国时期
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下列关于母系氏族的说法，那项是不正确的()
A.人们最初进入母系氏族公社阶段
B.在母系氏族公社里，实行严格的一夫一妻制，人们“只知其母，不知其父”
C.妇女在采集和家务劳动中举足轻重，在社会中占主导地位
D.人们按照血缘关系居住在一起的
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氧气瓶距离乙炔发生器和乙炔瓶应10m以上。（)
氧气瓶距离乙炔发生器和乙炔瓶应10m以上。()
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NJ2型机车制动系统的继电器接口模块（RIM）内有电子空气制动系统大电流隔离继电器，为机车系统和常用、紧急列车管线信号提供接口。
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（）项不属于建设用地规划管理的内容。
A. 核定规划设计单位B. 核定土地使用规划性质C. 审核建设工程总平面设计方案D. 核定土地使用容积率
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属于四川名点小吃之一的是（）。
A . 盘丝饼
B . 担担面
C . 叉烧包
D . 一品烧饼
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在进行项目经济评价时，下面哪几种说法是正确的 ()
A、 当财务评价和社会经济评价结论均为可行时，最终结论是可行的，该项 目应尽快实施
B、当财务评价和社会经济评价均为不可行时，最终结论是不可行的，并采 取措施防止这些项目上马
C、当财务评价认为可行，社会经济评价认为不可行，一般情况下项目是可 行的
D、对于一些国家急需、十分重要的项目，社会经济评价认为可行，但是财 务评价认为不可行，应予以否定
此题为多项选择题。
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工资率不论如何变化，劳动力需求量固定不变。这说明劳动力需求（）
A.缺乏弹性 B.富有弹性 C.无弹性 D.有无限弹性
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此例诊断价值最大的化验是（）
A.血脂
B.肾功能检查
C.肾B超
D.24小时尿蛋白定量，血浆蛋白
E.蛋白电泳
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金宝宝业务期限分为（）。
A.3个月、6个月
B.3个月、6个月、9个月
C.1年、2年、3年、5年
D.1年、3年、5年
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从E-R模型向关系模型转换时，一个m：n联系转换为关系模式时，该关系模式的关键字是（）。
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The world seems to be going diet crazy, and yet our nation’s obesity rate has shot up year after year. And, it’s not only the over 20 population that has to worry about their weight anymore. Children from kindergarten to twelfth grade are also experiencing the problems of an overweight lifestyle. According to the website cosmiverse.com, 11% of adolescents are categorized as being over-weight, and another 16% are in danger of becoming overweight. This is a 60% jump from the 1980’s. Some of the blame is being put on schools wanting to fit more academic classes into the children’s schedule rather than waste time on physical education. This new take on education has left us with physical activity at an all-time national low, resulting in obesity and poor physical conditioning at an all-time national high. The schools have tried a few solutions; the most recent in the news has been taking soda out of schools and increasing the required time children must be active during school. Will those methods help at all Education is important at school, but starts at home. I believe students are getting their bad habits from watching their parents and how they eat and exercise. The school system only helps to hinder the child’s dietary eating. I know there are studies showing genes that determine how a child will be built. That does not explain however, why the rate continues to increase at such a rapid rate each year. It seems more likely that more and more families have both parents working, leaving their children to their own means for a meal. "Nintendo, TV, Playstation and the like," are what Physical Education teacher, Sue Arostegui, attributes the inactiveness to. "Parents are either gone or too scared with today’s society to let them out and play." Classes on health need to become more regular and sports need to be encouraged. At Live Oak High School the staff does a good job of teaching how to eat and exercise to stay healthy. The freshmen study health every Wednesday in RE., and Para James teaches healthy eating and food preparation in Home Economics for the first few weeks of every school year. "Kids have no idea how many calories they are eating," said James of the overweight problems facing students. "Fast food is becoming more popular, it’s easier and parents are busy. They are only setting their kids up to gain weight with that diet however." School cafeterias are also getting blamed for the students’ eating habits. "Healthy eating should start at home," said L.O.H.S. cafeteria cool Brenda Myers. "Too many kids are being raised on fast food. After eating so much fast food they don’t have any tastes for real home cooked food. I always have healthy foods for students, but they are less likely to eat them." Other schools do not even have the type of programs Live Oak offers and are suffering even worse consequences. Sports keep students fit and healthy. There need to be more readily available sports programs for anyone who would like to join. Many students when they feel they do not meet the standards for a team will admit defeat and drop off the team: There needs to be a program that all students will be interested in and continue through for the entire season. Schools can only do and be blamed for so much however, and it will be up to the parents to become more aware of what activities their children are participating in and how healthy they are eating. Until that happens, I foresee the obesity rate continuing on its uphill curve.
A．Banning all types of soda drinks in schools,B．Adding more academic classes at the expense of physical education.C．No readily available sports programs for everyone.D．The tendency to neglect courses on healthy eating.
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电子公文的流转状态主要有（）。
A.未流转B.正流转C.已流转D.传阅
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艾弗里通过肺炎双球菌的实验发现了生命的遗传物质，因
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