热门试题:
[单选题]高强度螺栓的承载力比铆钉大( )。
A.35%
B.30%
C.25%
D.20%
[单项选择]人类免疫缺陷病毒的感染细胞是
A. CD4+细胞
B. CD8+细胞
C. 红细胞
D. 血小板
E. 成纤维细胞
[单项选择]
Advances in computers and data networks inspire visions of a future " information economy" in which everyone will have (1) to gigabytes of all kinds of information anywhere and anytime. (2) information has always been a (3) difficult commodity to deal with, and, in some ways, computers and high-speed networks make the problems of buying, (4) , and distributing information goods worse (5) better. The evolution of the Internet itself (6) serious problems. (7) the Internet has been privatized, several companies are (8) to provide the backbones that will carry traffic (9) local networks, but (10) business models for interconnection--who pays how much for each packet (11) , for example--have (12) to be developed. (13) interconnection standards are developed that make (14) cheap and easy to transmit information across independent networks, competition wi
A. elements
B. factors
C. ingredients
D. components
[多选题]工作中，遇（ ）等情况威胁到工作人员的安全时，工作负责人或专责监护人应下令停止工作。
A.雷
B.雾霾
C.雨
D.大风
[判断题]487、随车机械师（车辆乘务员）、客运乘务组均应听从列车长指挥，处理有关行车、列车防护和事故救援等事宜。
A.正确
B.错误
[单选题]无缝线路地段道床应采用一级碎石道砟，道床清洁、密实、均匀。跨区间无缝线路道岔范围内道床肩宽（ ）。
A.450mm
B.500mm
C.550mm
D.600mm
[判断题]油压表用来测试压力，使用需将压力表内部阻尼液体排空，否则会使压力表寿命降低。
A.正确
B.错误
[填空题]公安机关应当按规定主动公开公示( )的上下班时间以及报警、咨询、监督电话
和工作人员等信息，
A派出所 B基层单位 C窗口单位 D民警
[单选题]在票务管理、设备操作、现场票务运作过程中，因违反票务政策、规章制度或设备操作规范，尚未造成票务事故的行为或操作属于（ )
A.票务差错
B.票务违章
C.票务事故
D.四类票务事故
[判断题]不能在票面有效期内到达站的车票属失效票。
A.正确
B.错误
[单选题]下列不符合二尖瓣狭窄患者的描述的选项是（ ）。
A.两颧绀红色
B.肺动脉段膨出
C.左心房增大
D.严重时发生急性肺气肿
E.心音弱而远
[判断题]在起吊、牵引过程中，受力钢丝绳的周围、上下方、转向滑车内角侧、吊臂和起吊物的下面，禁止有人逗留和通过。
A.正确
B.错误
[单选题]（ ）应掌握接入高压配电网的分布式电源并网点开断设备的状态
A.变电运维部门
B.电网调度控制中心
C.营销部门
D.线路运维部门
[多项选择]抗心律失常药奎尼丁、利多卡因、普萘洛尔共有的电生理特性是( )。
A. 降低自律性
B. 加快传导速度
C. 相对延长有效不应期
D. 减慢传导
E. 以上均不对
[单选题]These programs are of immense value to pregnant women.
A.natural
B.tiny
C.fatal
D.enormous
[填空题] Who talks more, women or men The seemingly contradictory evidence is (B1) by the difference what I call public and private speaking. ’’More men feel comfortable doing public speaking, (B2) more women feel comfortable doing (B3) speaking. Another way of (B4) these differences is by using the (B5) "report-talk" and "rapport-talk".
For most women, the language of conversations is (B6) a language of rapport: a way of establishing connections and (B7) relationships. Emphasis is (B8) on displaying similarities and (B9) experiences. From childhood, girls criticize peers who try to stand (B10) or appear better than others. People feel their closest connections at home, or in setting where they feel at home - with one or a few people they feel close (B11) and comfortable about -- in other words, during private speaking. (B12) even the most public situations can be approached like private speaking.
For most men, talk is primarily a means to (B13) in
A. A．mediating
B．negotiating
C．associating
D．accommodating
[单选题]下列可以缓解城市内涝的措施是( )。
A.将水泥路面改为柏油路面
B.铺设人行道时使用透水砖
C.兴建人行天桥
D.拓宽城市道路
[单项选择]患者，女，29岁，已婚。孕8个月，头晕头痛，耳鸣作响，心悸怔忡，夜寐多梦，舌红，少苔，脉弦细滑，血压150/90mmHg。治疗应首选（2006）（）
A. 半夏白术天麻汤
B. 杞菊地黄丸
C. 羚角钩藤汤
D. 知柏地黄汤
E. 牛黄降压丸
[单选题]公司2020年度纯种丹系窝均总产仔数目标值是( )。
A.10.5头
B.12.5头
C.13.5头
D.14.5头
[单项选择]王某，男性，68岁。因记忆力减退3年，生活自理能力下降半年入院。3年前家人发现患者经常丢三落四，东西放下就找不着了，熟悉的物品说不上名字，只会说"那样东西"，情绪低落发呆，话少。病情逐渐加重，1年前不会烹饪自己熟悉的菜肴，见着老邻居不知叫什么名字，经常走错房间，外出不知回家的路，认为家人嫌他笨，说活着还不如死了好，孤僻懒散。半年前生活自理能力下降，不能胜任简单的家务，不会正确穿衣服，吃饭不知饥饱，自语痴笑，举止幼稚。查体神经系统无明显阳性体征。头颅CT示广泛性脑萎缩。此患者的预后和转归最常见的形式是（）
A. 阶梯式恶化
B. 只发作一次
C. 进行性发展加重
D. 自限性病程，不治可自愈
E. 缓慢发展，经治疗可取得较好疗效
[单选题]( )包括演习、竞赛、集训以及其他专项训练活动的组织实施计划。
A.年度训练计划
B. 专项训练计划
C.周训练计划
D. 综合训练计划
[单项选择]小儿，壮热恶风，少汗，头痛，鼻塞流脓涕，咽红肿，口渴，小便短赤，大便秘结，舌苔糙而黄垢。治疗以辛凉解表为主，应加用
A. 槟榔、莱菔子
B. 枳实、厚朴
C. 生石膏、知母
D. 大黄、玄明粉
E. 神曲、山楂
[判断题]出入场线是连接停车场与正线车站间的线路，供列车出入车辆段使用。
A.正确
B.错误
[判断题]建设单位违反《建筑法》规定，要求建筑设计单位或者建筑施工企业违反建筑工程质 量、安全标准，降低工程质量的，责令改正，可以处以罚款；构成犯罪的，依法追究行政责 任。
A.正确
B.错误
[单选题]正常精液排出后1小时内，具有a级活动力的精子应
A.>10%
B.>20%
C.>25%
D.>40%
E.>60%
[判断题]用兆欧表检测线路或电动机的绝缘电阻时，可带电操作。（）
A.正确
B.错误
[多选题]票据债务人对下列情况不得拒绝付款（ ）。
A.与出票人之间有抗辩事由
B.与持票人之间有抗辩事由
C.与持票人的前手之间有抗辩事由
D.与收款人的前手之间有抗辩事由
[单选题]调相机定子槽部线圈防晕层对地电位大于(____)V应引起注意。
A.10
B.15
C.20
D.5
[多项选择]下列过程一定能够导致DNA分子结构发生改变的是( )。
A. 基因突变
B. 基因工程
C. 染色体变异
D. 同源染色体的非姐妹染色单体互换
[判断题]轮过盈配合的过盈量，是决定组装后配合压力大小是否合适的关键.
A.正确
B.错误
[单选题]以下属于非特异性感染的是
A.结核病
B.破伤风
C.气性坏疽
D.丹毒
E.炭疽
[单选题]新中国成立以后，我国政府制定了“两弹一星”的战略决策，这一战略目标的实现是在：( )
A.20世纪50～60年代
B.大跃进时期
C.20世纪60～70年代
D.文革时期
[单选题]高压熔断器一般在( )电压等级的系统中保护电路中的电气设备。
A.3kV-35kV
B.35kV以上
C.110kV
[单选题]任何时候，尽可能保证一步骤只有一个动作。
A.正确
B.错误
[单项选择]患者，男，20岁。咳嗽伴低热，盗汗，乏力1个月。X线检查显示右月市尖云雾状阴影。应首先考虑的是
A. 肺炎
B. 慢性支气管炎
C. 支气管扩张
D. 肺癌
E. 肺结核
[判断题]压力式滤油机由多个滤板和滤框交替排列组成。
A.正确
B.错误
[单项选择] The combination of the increased burden of AIDS in the developing world and the absence of affordable therapies and vaccines has raised the sensitivity of health professionals to issues of ethics and equity in international biomedical research. Foremost among the concerns is whether new treatments should be compared against Western standards of care or against existing local standards. Other thorny issues include whether communities can benefit from research they have taken part in when they may not be able to afford the new interventions that prove effective and how researchers and their institutions in developing countries can be strengthened through international collaboration. Strong emotional responses and increased entrenchment have begun to characterize the discussion on how to design and conduct international biomedical research.
Those who venture into the discussion on international research have an obligation to begin with fairness as the principal rule of engagement,
A. whether the experimented treatments should be compared against local standards
B. whether the experimented treatments are shown to be effective
C. when local communities will be able to carry out their own research projects
D. the prohibitive costs involved
[单选题] 根据上述案情分析,李某的行为属于:(单选)
A.妨害公共安全
B.聚众扰乱社会秩序
C.聚众斗殴
D.寻衅滋事
