Children live in a world in which
science has tremendous importance. During their lifetimes it will affect them
more and more. In time, many of them will work at jobs that depend heavily on
science--for example, concerning energy sources, pollution control, highway
safety, wilderness conservation, and population growth. As taxpayers they will
pay for scientific research and exploration. And, as consumers, they will be
bombarded (受到轰击) by advertising, much of which is said to be based on
science. Therefore, it is important that children, the citizens of the future, become functionally acquainted with science--with the process and spirit of science, as well as with its facts and principles. Fortunately, science has a natural appeal for youngsters. They can relate it to so many things that they encounter--flashlights, tools, echoes A. are ready to accept the pronouncements of others B. tend to reach conclusions with certainty C. are aware that others are likely to make hasty judgments D. seek truth through observation, experimentation and reasoning [单选题]根据国内城市居民用电密度标准大致为( )左右.
A.6W/ B.8W/ C.9W/ D.10W/ [简答题]视觉发育异常的行为表现有哪些?
[单选题]在其他站线上,道岔轨道静态几何尺寸容许偏差管理值中,三角坑的计划维修标准为( )mm。
A.7 B.8 C.9 D.10 [单项选择]急性心肌梗死发病早期(6小时内),最积极、最有效的限制梗死面积扩大的措施是()
A. 抗凝治疗 B. 抗血小板治疗 C. 溶栓疗法 D. 绝对卧床 E. 静脉应用硝酸甘油 [单选题]队列研究中,一般人群肺癌发病率是0.4%,吸烟组的肺癌发病率是0.6%,对照组的肺癌发病率是0.2%,归因危险度(AR)是
A. 0.4% B. 3 C. 2 D. 0.2% E. 4 [单项选择]作为人力资源培训开发的人员可以是( )。
A. 一线经理 B. 组织内学历高的人员 C. 组织内能力强的人员 D. 组织内有突出贡献的人员 [单选题]300考题
【单选题】在雷暴雨天气,应将门和窗户等关闭,其目的是为了防止【】侵入屋内,造成火灾、爆炸或人员伤亡。 A.球形雷 B.直接雷 C.感应雷 [单选题]在紧急制动环路里,总风压力低于( )bar总风压力低=27-K109失电。
A、 6.0 B、 5.5 C、 5.0 D 7.0
A.A B.B C.C D.D [判断题]轮缘及踏面偏磨的原因是轮径差过大使车体重心向小轮径一侧偏移致使小轮径之轮缘.踏面磨耗加剧。
A.正确 B.错误 [不定项选择题]综合监控软件不能测试( )功能
A.BAS B.FAS C.AFC D.PA [判断题]政法单位党组(党委)向同级党委请示报告重大事项和汇报重要工作,一般应当同时抄报上级党委政法委员会。一一
A.正确 B.错误 [单选题].中压架空线路运行电流一般应控制在长期允许载流量的(),预留转移负荷裕度,超过时应采取分路措施。
A.2/3以上 B.2/3以下 C.1/3以上 D.1/3以下 [单项选择]
Nike is one of the world’s best-known sports shoe and clothes companies. It earns over $1 billion a year. It markets running shoes, walking shoes, basketball shoes, jogging(慢跑)suits, and many other related products. [单选题]物料提升机作业中发生停电时,下列哪种操作不正确。()
A.将控制手柄或按钮置于零位 B.操作人员就近离开 C.切断电源 D.将吊笼降至地面 [单选题]电焊机一次线长度不能超过( )。
A.10米 B.3米 C.5米 [单选题]网络运营者应当对其收集的用户信息严格保密,并建立健全()制度。
A.A、保护隐私 B.B、不得泄密 C.C、严格保密 D.D、用户信息保护 [判断题]客户撤销密码器或删除账户,需提供全套账户资料并核实()
A.正确 B.错误 [单项选择]《素问·阴阳应象大论》中“先痛而后肿者”是由于()
A. 寒伤形 B. 热伤气 C. 形伤气 D. 气伤形 E. 寒伤气 [填空题]清扫交直流屏时,应断开( ),对交流母排进行验电,同时保证( )对直流母排正常供电。
[不定项选择题]下列各医疗区的细菌学指标是()
A. - 物体表面(cfu/m2)≤15 医护人员手(cfu/m2)≤15
A.空气(cfu/m3)≤200 物体表面(cfu/m2)≤5 医护人员手(cfu/m2)≤5 B.空气(cfu/m3)≤1000 物体表面(cfu/m2)≤8 医护人员手(cfu/m2)≤8 C.空气(cfu/m3)≤10 物体表面(cfu/m2)≤5 医护人员手(cfu/m2)≤5 D.空气(cfu/m3)≤500 物体表面(cfu/m2)≤10 医护人员手(cfu/m2)≤10 E.化验室() [多选题]线路按在运营中的功能定位分为()。
A.正线 B.辅助线 C.折返线 D.车场线 我来回答: 提交
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