热门试题:
[单选题]美国某大学研究人员在一项调查研究中发现，女性常年加班更容易早逝。 如果女性一周工 作时间超过 60 个小时，那么罹患心脏病、癌症、糖尿病、关节炎的风险比不加班的人高出 了 3 倍。 不过加班对男性的健康影响不是很明显，常年加班的男性只是罹患关节炎的风险 有所增加。 而有趣的是，研究发现，每周工作 41 至 50 个小时的男性，罹患心脏病、肺部疾 病的风险比一周工作等于或少于 40 个小时的男性要低。
如果上述为真，可以得出以下哪项
A.女性长期加班的危害比男性大
B.加班的女性更容易患心脏病、癌症等重大疾病
C.加班会提高患病风险，对身体有害
D.女性加班时间普遍比男性加班时间长
[多选题]隔离开关开箱检查，镀锌设备支架应（____）、色样一致。
A.无变形
B.镀锌层完好
C.无锈蚀
D.无脱落
[判断题]电气化区段移频自动闭塞(ZP-89型)，移频发送盘移频频率的变化为±1HZ。( )
A.正确
B.错误
[多项选择]Jerison于1973年通过化石研究了新生代各个时期哺乳动物的相对脑尺寸发现，随着进化时间的增长，脊椎动物的脑尺寸在逐渐增大，而在任何一个时间点上，食肉动物（捕食者）总具有比有蹄类动物（被捕食者）更大的脑尺寸。下面说法正确的是（）。
A. 自然选择将使被捕食者具有更高的智商，以躲避捕食者的猎杀
B. 捕食者为了更好的捕捉猎物，也具有越来越高的智商
C. 捕食者与被捕食者互相都给对方施加了选择压力
D. 这是捕食者和被捕食者的协同进化的结果
[判断题]小闸制动后缓解时,制动缸压力在3到5秒内从300kPa下降到80kPa。
A.正确
B.错误
[单项选择]Dietetics (营养学) is the application of the science of nutrition (营养) to the selection and preparationof foods, in health and disease. A dietitian is specially trained to give practical advice to individualsabout their diets. He/she will have received training in a hospital and/or community settingas part of his/her course. Many dietitians are employed in the NHS (National Health Service).They work with both healthy and sick people, as well as their families. With patients who needspecial diets, dietitians use their scientific knowledge to provide practical information that isappropriate to the patient’s medical history and lifestyle.
These days a large number of dietitians spend some or all of their time working in the community rather than in a hospital. Many of these have full conditions to apply for registration inpublic health nutrition as well as being registered dietitians (RD). In the community, the dietitian’swork is more about health education, although many also run clini
A. all the dietitians
B. all the registered dietitians
C. only full-time dietitians
D. only part-time dietitians
[单选题]在桐岭车辆段不落轮镟线是第（）道。
A.19
B.23
C.22
D.24
[判断题]机械连接用套筒抗拉强度，以连续生产的同原材料、同类型、同规格、同批号为一批。
A.正确
B.错误
[单选题]煤矿安全实行民主监督，又叫（），是安全法律、法律赋予煤矿职工群众的一种权利，也是现代企业进行安全生产的有效管理途径和手段。
A.群众监督
B.安全检查
C.预控管理
[单项选择]下列不属于沉淀反应的是
A. 单向免疫扩散
B. 双向免疫扩散
C. 免疫电泳
D. 免疫印迹法
E. 免疫比浊
[单项选择]我国承认耕作权的意义在于( )，防止土地浪费和发展农业，同时兼顾国家建设需要和土地使用权人的合法权益。
A. 稳定农村土地承包关系
B. 保护土地承包人的土地使用权益
C. 加强农村土地联产承包责任制
D. 提高土地利用率
[单项选择]摩擦片的材质通常不包括（）。
A. 尼龙
B. 陶瓷
C. 聚氨酯
D. 金钢砂
[简答题]试论述领导威信对于领导有效性的重要意义？
[单项选择]可引起弥散量增加的是（）
A. 贫血
B. 肺部感染
C. 红细胞增多症
D. 肺水肿
E. 先天性心脏病
[填空题]保证网络系统中信息安全与保密的核心技术是______技术。
[多选题]全陪应通过（）途径对各站的接待服务质量和接待计划落实情况进行检查和监督。
A.服务类型
B.计划实施
C.计划调整
D.改进意见
E.审核团费
[单项选择]下列描述，哪项不正确（ ）
A. 消毒是指杀死物体上所有微生物的方法
B. 灭菌是指杀灭物体上所有微生物的方法
C. 防腐是指防止或抑制细菌生长繁殖的方法
D. 无菌为不含活菌的意思
E. 消毒不一定能杀死含芽胞的细菌和非病原微生物
[简答题]指令“JMP SI”和“JMP WORD PTR [SI]”作用有什么不同？请说明。
[单项选择]正常生产中，如发现焦油盒中液面溢出，可能原因是（）。
A. 管道被异物阻塞
B. 低压氨水压力小
C. 高压氨水压力小
[单选题]发生人身触电时,当通过人体的交流电流达到( ) 毫安时会有生命危险。
A. 30
B. 50
C. 100
[单选题]《铁路客运运价规则》第2条规定，客运运价与（）构造全部运输费用。
A.行李运价
B.包裹运价
C.客运杂费
D.基本票价率
[判断题]曲线处接触线吊弦线夹螺栓应穿向曲线内侧。
A.正确
B.错误
[多选题]压缩机的惰走时间缩短说明（）。
A.A.轮机主汽门有泄漏
B.B.轮机调速汽门有泄漏现象
C.C.机组同心度变差
D.D.机械部分有摩擦
E.E.润滑油质劣化
[单项选择]I came to feminism the way some people come to social movements in their early years: out of self-interest. I got on the equality bandwagon because I was a young woman with a streak of ambition a mile wide, and without a change in the atmosphere I thought I was going to wind up living a life that would make me crazy. As my father said not long ago, "Can you imagine what it would have been like if you had been born 50 years earlier Your life would have been miserable." The great thing was that it was possible to do good for all while you were doing well for yourself. Each of us rose on the shoulders of women who had come before us. Move up, reach down: that was the motto of those who were worth knowing. But it was not just other women we elevated, but entire enterprises. More women on the staffs and the mastheads of the country"s largest publications changed them. It resulted in newspapers and magazines that covered women as more than a mixture of recipes and fashion collections. But there"s one question that always lurks around the margins of the battle for equal rights: how will we know when we"ve won Sometimes it seems like a classic dance of two steps forward, one back. Indra Nooyi, an Indian-born number cruncher, was recently named CEO of Pepsi. But that makes her one of only 11 women now running a Fortune 500 company, which works out to slightly more than 2 percent. And Forbes magazine just published an essay titled "Don"t Marry Career Women" by a male writer who couldn"t see the advantages of a wife who could pay the mortgage and support the children even if her husband lost his job or suffered a massive coronary. That kind of nonsense takes you back in time, to the early days when women dumped babies on the desk of the mayor of Syracuse to protest the lack of child care. Maybe it was the classic protest slogan "Don"t cook dinner—starve a rat today," but the perception was that the fight for equality was a war against men. But the battle was really against the waste of talent, the waste to society, the waste of women who had certain gifts and goals and had to suppress both. The point was not to take over male terrain but to change it because it badly needed changing. The depth and breadth of that transformation is what reflects the success of the movement, and by that measure, women are doing well. And so is everyone else.According to Paragraph 3, women"s fight for equality is troubled by the problem that
A. there are fewer women executives in business world.
B. it is difficult to define the success of feminist movement
C. women can not prove themselves on job.
D. men do not want to marry career women.
[多项选择]患者，男性，5岁，感头晕、头痛半年余，下肢乏力。查体：上肢血压：160／100mmHg，股动脉、足背动脉搏动弱，胸骨左缘2～3肋间和左背部肩胛区均可闻及喷射性收缩期杂音，并向下方传导。对于主动脉缩窄的患者而言，心电图可以出现（）。
A. 心电图正常
B. 心电图电轴左偏
C. 右心室肥大
D. P波高尖
E. ST-T改变
F. 左心室高电压
G. 右心室高电压
H. 左心室肥大
[单选题].民用航空适航管理是对哪几个环节进行管理
A.设计.制造
B.使用和维修
C.设计.制造.使用和维修
[不定项选择题]A.β受体阻断剂
A.呋塞米
B.ACE抑制药类
C.钙拮抗剂
D.α受体阻断剂
E.慢性肾小球肾炎，水钠潴留引起的高血压治疗可首选
[单项选择]青蒿素的性质是
A. 与NaOH试液一起温热，即显紫红色，滴加稀盐酸成酸性后，变成黄色，再加过量NaOH液则变成橙红色
B. 溶于无水乙醇后，加碘化钾试液，稀硫酸与淀粉指示液即呈紫色
C. 在稀盐酸中与亚硝酸钠加热反应，有小叶状结晶析出
D. 与NaOH试液共沸后，放冷，加亚硝基铁氰化钠试液，即显红色
E. 与碳酸钠混合，炽灼后，水溶液显氯离子反应
[单选题]根据《工伤保险条例》,如下情况不能认定为工伤:a受到暴力伤害的;b因犯罪或者违反治安管理伤亡的;c醉酒导致伤亡的;d自残或者自杀的;e工作时间岗位上突发疾病死亡的。
A.abcd
B.bcd
C.bcde
D.abcde
[单项选择]根据《国际海运危险货物规则》的规定，油漆、清漆属于（）类的危险品。
A. 爆炸品
B. 气体
C. 易燃液体
D. 有毒物质
[单项选择]冷却塔在（）有效面积上，单位时间内所冷却的水量叫水负荷。
A. 每立方米
B. 每平方米
C. 每立方厘米
D. 每平方厘米
[单选题]弗洛伊德认为，意识不是思考的本质，意识本身就是大脑的输出形式。同时，相对于整个潜意识来说，我们意识到的内容只是冰山一角。大脑处理信息的效率异常之高，而进入意识层面的内容却极其有限。情绪反应也是如此，在我们感觉到自己的情绪之前，情绪反应已经产生，“情不自禁”就是对此的生动描述。因此我们很难掩饰自己的情绪。也许因此而可推论，我们在潜意识层面解读别人心智的能力，必定比在意识中还要强。根据以上文字，下列说法正确的是：( )
A.意识总是先于潜意识而存在
B.潜意识是大脑的一种输出形式
C.相对于潜意识，我们的意识始终是有限的
D.通常情况，我们仅利用潜意识解读别人心智
[单项选择]各组织或器官T接受的当量剂量HT与相应的组织权重因子wT的乘积之和称之为（）
A. 照射量
B. 吸收剂量
C. 剂量当量
D. 组织权重因子
E. 有效剂量
