Working at nonstandard times—evenings,
nights, or weekends—is taking its toll on American families. One-fifth of all
employed Americans work variable or rotating shifts, and one-third work
weekends, according to Harriet B. Presser, sociology professor at the University
of Maryland. The result is stress on familial relationships, which is likely to
continue in coming decades. The consequences of working irregular hours vary according to gender, economic level, and whether or not children are involved. Single mothers are more likely to work nights and weekends than married mothers. Women in clerical, sales, or other low-paying jobs participate disproportionately in working late and graveyard shifts. Married-couple households with children are increasingly becoming dual-earner households, generating more split-shift couples. S A. Positive. B. Negative. C. Indifferent. D. Objective. [单项选择]电能表的工作频率改变时,对()。
A. 相角误差影响大; B. 幅值误差影响较大; C. 对相角误差和幅值误差有相同影响; D. 对相角误差和幅值误差都没有影响。 [单选题]任何科学理论都不能穷尽真理,而只能在实践中不新地开辟 认识真理的道路。这说明( )。
A.真理具有客观性 B.真理具有绝对性 C.真理具有相对性 D.真理具有全面性 [单项选择]材料采购资金管理方法中,适用于分工明确,采购任务量确定的企业或部门的是( )。
A. 批量采购管理法 B. 品种采购量管理法 C. 采购金额管理法 D. 费用指标管理法 [多选题] 依据《中国南方电网有限责任公司电力安全工作规程》(Q/CSG510001-2015)第18.3.2条规定:测量低压熔断器和水平排列低压母线电流时,测量前应将各相熔断器和母线用绝缘材料加以( ),以免引起( ),同时应注意不得触及( )
A.包护隔离 B.相间短路 C.母线过电压 D.其他带电部分 [单项选择]双绞线两端安装有______头,用于连接网卡与其他设备。
A. RJ-45 B. F/O C. AUI D. BNC [判断题]路用列车应由施工单位指派胜任人员携带列车无线调度通信设备值乘,并在区间协助司机作业。路用列车或施工机械进入施工地段时,应在施工防护人员显示的停车手信号前停车,根据施工负责人的要求,按调车办法,进入指定地点。
A.正确 B.错误 [多选题] 依据《水利工程建设项目生产安全重大事故隐患直接判定清单(指南)》,下列关于脚手架的描述中,可直接判定为水利工程建设项目生产安全重大事故隐患的是()。
A.脚手架未进行专门设计,无专项方案 B.脚手架未经验收或验收不合格投入使用 C.吊篮未经检测验收或无独立安全绳 D.安全管理制度安全操作规程和应急预案不健全 [单项选择]事业单位专业技术人员薪级工资分为()个薪级。
A. 55 B. 60 C. 65 D. 70 [判断题]35 kV以下的电线路(包括通信线路、广播电视线路等)不得跨越接触网,应由地下穿过铁路。
A.正确 B.错误 [单选题]《铁路旅客运输服务质量规范》(空调)7.4.2,车厢不间断供水。上水站( )分别核记水位刻度,确认上水情况。
A.到站前、开车前 B.到站前、开车后 C.到站后、开车前 D.到站后、开车后 [多项选择]和平共处原则的含义()。
A. 仅指社会制度相同国家和平共处 B. 仅指社会制度不同国家和平共处 C. 指多种不同制度国家和平共处 D. 包括社会主义国家与资本主义国家和平共处 [单选题]安全生产许可证的有效期为()年。
A. 3 B.4 C.5 D.6 [多选题]()车厢内禁止载人。
A.货运汽车挂车 B.起重车 C.平板车 D.自动倾卸车 E.略 F.略 [判断题]仅办理摘挂取送作业的牵出线与其相邻线时的线间最小距离不得小于5500mm。
A.正确 B.错误 [判断题]推进车辆连挂时,要显示十、五、三车的距离信号,没有显示十、五、三车的距离信号,不准挂车,没有司机回示,应立即显示停车信号。
A.正确 B.错误 [单选题]关于医院内感染,以下哪项错误:
A. 多由机会致病性微生物引起 B. 无特异性预防方法 C. 医护人员可成为病原携带者 D. 原有慢性感染在医院急性发作也应属于医院内感染 E. 应采取综合性措施加强预防 [单选题]《铁路旅客运输规程》第65条规定,( )应按四类包裹办理。
A. 计算机 B. 电视机 C. 摩托车 D. 残疾人车 [判断题]地壳中造岩矿物的主要成分是硫酸盐。()
[单选题]在票面发站开车前( )天(含)以上退票的,不收取退票费;
A.5 B.8 C.10 D.15 [不定项选择题]共用题干
The World's Longest Bridge
Rumor has it that a legendary six-headed monster lurks in the deep waters of the Tyrrhenian Sea between Italy and the island of Sicily._______(46)When completed in 2010,the world's longest bridge will weigh nearly 300,000 tons一equivalent to the iceberg that sank the Titanic一and stretch 5 kilometers long."That's nearly 50 percent longer than any other bridge ever built."says structural engineer Shane Rixon. _______(47)They're suspension bridges,massive structures built to span vast water channels or gorges.A suspension bridge needs just two towers to shoulder the structure's mammoth weight, thanks to hefty supporting cables slung between the towers and anchored firmly in deep pools of cement at each end of the bridge.The Messina Strait Bridge will have two 54,100-ton towers,which will support most of the bridge's load.The beefy cables of the bridge,each 1.2 meter in diameter, will hold up the longest and widest bridge deck ever built. When construction begins on the Messina Strait Bridge in 2005,the first job will be to erect two 370 meter-tall steel towers._______(48)Getting these cables up will be something. It's not just their length一totally 5.3 kilometers一but their weight._______(49) After lowering vertical"suspender"cables from the main cables,builders will erect a 60- meter一wide 54,630一ton steel roadway,or deck一wide enough to accommodate 12 lanes of traffic.The deck's weight will pull down on the cables with a force of 70,500 tons.In return,the cables yank up against their firmly rooted anchors with a force of 139,000 tons一equivalent to the weight of about 100,000 cars. Those anchors are essential._______(50) _______(46) A.Some environmentalists are against the project on biological grounds. B.What do the world's longest bridges have in common? C.If true ,one day you might spy the beast while zipping(呼啸而过)across the Messina Strait Bridge. D.They're what will keep the bridge from going anywhere. E.The second job will be to pull two sets of steel cables across the strait,each set being a bundle of 44,352 individual steel wires. F.They will tip up the scales at 166,500 tons一more than half the bridge's total mass. [多项选择]意识是指社会的人所特有的精神活动及其成果的总和。下面关于此说法正确的是( )。
A. 意识是物质世界发展到一定阶段的产物 B. 意识是人脑对物质的反映 C. 意识能动地反作用于物质 D. 意识有时不受事物发展规律的制约 [单选题]NDB天线水平加顶部份作用是( )。
A.辐射导航信号 B.增加垂直部份顶部天线电流 C.固定垂直部份 D.不起任何作用 [单项选择]威尔达夫斯基早就说过一句名言:“预算就是()。”
A. 计划 B. 预测 C. 政治 D. 控制 [单项选择]原发性肾小球疾病的病理分型不包括()。
A. 轻微病变型肾小球肾炎 B. 系膜增生性肾小球肾炎 C. 膜性肾病 D. 肾病综合征 E. 硬化性肾小球肾炎 我来回答: 提交
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