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{{B}} Why Humans
Walk on Two Legs{{/B}} A team of scientists that studied chimpanzees (黑猩猩) trained to use treadmills(跑步机) has gathered new evidence suggesting that our earliest apelike ancestors started walking on two legs because it required less energy than getting around on all fours. Michael Sockol, researcher of UC Davis, worked for two years to find an animal trainer willing to coax (劝诱) adult chimps to walk on two legs and to walk on ail fours. The five chimps also wore face masks used to help the researchers measure oxygen consumption. While the chimps worked out, the scientists collected data that allowed them to calculate which method of locomotion (移动) used less energy and why. The team gathered the same information for four adult humans walking on a treadmill. The rese A. They experienced more climate changes than we do today B. They were forced to travel between food patches C. They were much taller than modern man D. They could cover more ground with less energy [单项选择]In 1997 he was ______ of murder and sentenced to life imprisonment.
A. charged B. sued C. convicted D. diagnosed [单项选择]患者颈6椎体骨折脱位伴截瘫，检查时，股四头肌稍有收缩，但不能引起膝关节活动，这时的肌力应该是（）。
A. 0级 B. 1级 C. 2级 D. 3级 E. 4级 [单项选择]下列不属于医疗用毒性西药品种的是
A. 士的年 B. 毛果芸香碱 C. 阿托品 D. 阿橘片 [多选题]万用表能进行()电气测量。
A.交、直流电压; B.交、直流电流; C.直流电阻; D.电功率和电能; E.电容、电感和音频电平输出; [多项选择]香豆素与碱作用的特点及原因为
A. 在强碱溶液中可以开环，酸化后又闭环成为原来的内酯 B. 7-甲氧基香豆素、7-羟基香豆素较难开环 C. 长时间在碱溶液中放置，再加酸也不能环合成内酯环 D. 与浓碱共沸，可裂解为酚类或酚酸等产物 E. 遇碱开环的原因是具有内酯环 [判断题]调度员潮流可用于预想事故、设备退出运行对静态安全的影响分析及作出预想的运行方式调整方案。（）
A.正确 B.错误 [单项选择]The results of the survey are interesting and they______more questions than they can answer.
A. bring abotit B. prohibit C. project D. benefit from [单项选择]建设项目的( )工作应与项目建设进度同步进行，并在项目竣工以前全部完成。
A. 日常检查 B. 财务审计 C. 完工总结 D. 生产准备 [单选题]《供电服务“十项承诺”》规定：受理客户计费电能表校验申请后，( )内出具检测结果。
A.3个工作日 B.5个工作日 C.7个工作日 D.1个工作日 [单项选择]依据《关于发展热电联产的规定》，单机容量50MW以下热电机组，其热电比年平均值的下限为（）。
A. 50% B. 100% C. 75% D. 80% [简答题]联系秘书工作实际，试述秘书参谋作用的从属性性质。
[单项选择]办公自动化系统应用软件的取得（）
A. 依靠本单位的技术力量自主开发 B. 购买商用的办公自动化系统应用软件 C. 委托软件公司开发 D. 这三种 [判断题]交流电的超前和滞后只能对同频率的交流电而言不同频率的交流电不能说超前和滞后也不能进行相量运算。（ ）
A.正确 B.错误 [单项选择]{{B}} Questions 11 to 18 are based on the passage you have just heard.{{/B}}
A. The project demands more time. B. The project is only half done. C. She will finish it within four months. D. She has spent less time on the project. [单选题]( )kV及以下设备可用与带电部分直接接触的绝缘隔板代替临时遮栏。
A. 35 B. 110 C. 220 D. 330 [判断题]焊工施焊时应避免过载,以防损坏绝缘发生触电事故。
A.正确 B.错误 [简答题]简述行政强制措施与行政强制执行以及两者的区别。
[单选题]液体动压轴承是指运转时()的滑动轴承。
A.半干摩擦 B.馄合摩擦 C.纯液体摩擦 D.无摩擦 [多项选择]生物芯片检测仪器是一种多学科高度结合的精密仪器，学科包括（）
A. 光学 B. 机械 C. 电学 D. 计算机 E. 现代分子生物学 我来回答: 提交
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