热门试题:
[单选题]、为排除管道中聚集的空气,易采用( )。
A.闸阀
B.截止阀
C.排气阀
D.止回阀
[单选题]进入受限空间作业的应急救援方案中,可不包括( )。
A.救援人员的联系方式
B.救援人员的确定、培训、演练
C.具体的救援步骤
D.救援器材的准备、就位
[单选题]某外源性化学物质的蓄积系数K>5时，表明该物质的蓄积毒性为
A.高度蓄积
B.不蓄积
C.明显蓄积
D.轻度蓄积
E.中等蓄积
[判断题]同杆（塔）架设多回线路中的部分停电线路上的工作，应填用电力线路第二种工作票。（ ）
A.正确
B.错误
[单选题]假定原先1台电脑与4部手机的价值量相等，现在生产电脑的社会劳动生产率提高一倍，而生产手机的社会必要劳动时间缩短到原来的一半，其他条件不变，则现在1台电脑与（ ）部手机的价值量相等。
A.2
B.4
C.8
D.16
[单项选择]下列方法中以教师活动为主的是（）。
A. 读书、讨论
B. 谈话、演示
C. 实验、实习
D. 练习、研究
[判断题]作业时，作业人员的双手应始终握持绝缘杆保护环以上部位，并保持带电清扫有关绝缘部件的清洁和干燥。
A.正确
B.错误
[单选题]任何人发现火灾时,都应报警。任何单位、个人应当( )为报警提供便利,不得阻拦报警。
A.. 无偿
B.. 有偿
C.. 自愿
D.. 自觉
[单项选择]Word文档默认的扩展名是( )。
A. dot
B. doc
C. txt
D. word
[单项选择]行政复议实行几级复议制（）。
A. 一级复议制
B. 三级复议制
C. 五级复议制
D. 二级复议制
E. 四级复议制
[不定项选择题]共用题干
第一篇
Human Evolution
Being a man has always been dangerous.There are about 105 males born for every 100 females, but this ratio drops to near balance at the age of maturity,and among 70-year-old there are twice as many women as men. But the great universal of male mortality is being changed.Now,boy babies survive almost as well as girls do. This means that,for the first time,there will be an excess of boys in those crucial years when they are searching for a mate. More important,another chance for natural selection has been removed. Fifty years ago,the chance of a baby(particularly a boy baby)surviving depended on its weight. A kilogram too light or too heavy meant almost certain death.Today it makes almost no difference.Since much of the variation is due to genes,one more agent of evolution has gone.
There is another way to commit evolutionary suicide:stay alive,but have fewer children.Few people are as fertile as in the past. Except in some religious communities,very few women have 15 children.Nowadays the number of births,like the age of death,has become average.Most of us have roughly the same number of offspring. Again,differences between people and the opportunity for natural selection to take advantage of it have diminished.India shows what is happening. The country offers wealth for a few in the great cities and poverty for the remaining tribal peoples.The grand mediocrity of today一everyone being the same in survival and number of offspring means that natural selection has lost 80%of its power in upper-middle一class India compared to the tribes.
For us,this means that evolution is over;the biological Utopia has arrived.Strangely,it has involved little physical change.No other species fills so many places in nature.But in the past 100,000 years一even the past 100 years一our lives have been transformed but our bodies have not. We did not evolve,because machines and society did it for us.Darwin had a phrase to describe those ignorant of evolution:"they look at an organic being as savage looks at a ship,as at something wholly beyond his comprehension."No doubt we will remember a 20th century way of life beyond comprehension for its ugliness. But however amazed our descendants may be at how far from Utopia we were,they will look just like us.
What does the last sentence mean?
A.It means that we are still very far from Utopia.
B.It means that our descendants look like us because of little biological change.
C.It means that our descendants will not reach Utopia either.
D.None of the above.
[单项选择]维生素B12缺乏的巨幼红细胞贫血病人禁用的吸入全麻药是（）
A. 安氟醚
B. 异氟醚
C. 七氟醚
D. 氧化亚氮
E. 地氟醚
[单选题]冰面救援时应采取的安全防护措施，下列说法错误的是？( )
A.优先使用橡皮艇、冰上浮板等专业救生装备
B.救援行动展开前应检测冰面厚度，选择距离被困人员较近的安全位置作为救援起点
C.使用绳索进行保护，若条件允许应对施救者设置三条绳索进行保护，且三条绳索尽可能平行设置，防止施救者沉入冰层下方或被冰层卡住时的紧急救助
D.视情采取在冰面铺设木板、消防梯等措施，增大受力面积，提高安全系数
[判断题]电场中某一点和参考点之间的电压,就是该点的电位。
A.正确
B.错误
[多选题] 2014年6月1日起实施的《上海轨道交通行车组织规程》中规定,书面调度命令应包含要素有:发布日期、发布时间、命令号码、受令处所、命令内容、以及( )。
A.受令人
B.复诵人
C.发令人
D.执行人
E.申请人
[单选题]常见的电伤包括( )。
A.电弧烧伤
B.电烙印
C.皮肤金属化
D.以上都是
[单项选择]歌剧《费加罗的婚礼》的曲作者是（）。
A. 海顿
B. 莫扎特
C. 贝多芬
D. 韦伯
[填空题]面向对象程序设计的基本思想是 【9】 和可扩展性，可扩展性体现在继承性和行为扩展两个方面。
[判断题]陆游的“山穷水尽疑无路，柳暗花明又一村”一联是千古名句。
[单项选择]男性患者，50岁，高血压病史8年，夜尿增多半年，恶心、呕吐2周，体检血压：170/100mmHg，眼底检查有动静脉交叉征，血红蛋白82g/L，BUN24mmol/L，血肌酐420μmmol/L，心电图检查示左心室肥大。最主要的治疗为（）
A. 低盐饮食
B. 用降压药
C. 用利尿剂
D. 低蛋白饮食
E. 输红细胞
[单选题]220kV母线红外精确测温周期：( )。
A.1周
B.1月
C.3月
D.半年
[多项选择]当代发达资本主义国家上层建筑的深刻变动表现在（）
A. 出现了庞大的“中间阶层”
B. 国家大大加强了对经济生活的调节
C. 新自由主义理论逐渐成为社会的主流思想
D. 分配关系作了调整
[判断题]太钢集团《安全生产标准化班组考评标准》中本质安全型班组是“班组建立和形成了安全生产长效机制，即使在存在安全隐患的条件下，也能够依靠班组内部的功能保障和制度约束，实现本班组及岗位长效安全生产。”（）
A.正确
B.错误
[填空题]The boy is very young. The boy can’t understand it.
The boy is ______ young ______ understand it.
[单项选择]对开放性关节损伤，下列错误的是（）
A. 治疗的主要目的是防止关节感染和恢复关节功能
B. 根据损伤程度不同，一般可分为三度
C. 对一度开放性关节损伤，应打开关节囊用大量生理盐水反复冲洗
D. 对二度开放性关节损伤，关节囊和韧带应尽量保留、修复
E. 对三度开放性关节损伤，经彻底清创后敞开伤口，无菌敷料湿敷，3～5天后可行延期缝合
[单项选择]下肢抖动法时，抖动幅度要（），频率要快。
A. 稍大
B. 均匀
C. 大
D. 小
[判断题]改变钞票观察角度时，2019年版第五套人民币20元、10元纸币光彩光变面额数字的颜色在金色和绿色之间变化。
A.正确
B.错误
[判断题]组装断面宽大的塔片，在竖立的构件未连接牢固前应采取永久固定措施。
A.正确
B.错误
[单选题]―年8月24日起实施的车辆分公司《禁、控烟管理规定》中指出，维修厂、部[线]、室涉及到的各区域的禁烟标识由（ ）提供，各单位自行设立。
A.综合办公室
B.新车部
C.维修部
D.质量安全部
[判断题]通风机串联通风可以增大通风的压力。 ( )
A.正确
B.错误
[多选题]个人在征信活动中有（ ），此外，任何人都有重新开始建立信用记录的机会。
A.异议权
B.知情权
C.纠错权
D.司法救济权
[填空题]
[听力原文]11-15
Fish are animals that live in water. (Q11)They live al most any place where there is water. Some are found in lakes. Other fish live in the sea. Most fish never leave water.
(Q12) There are about 21,000 kinds of fish. One kind might not look like another. Some fish are very small. The smallest one is no bigger than a fly. Others are very big. (Q13) The biggest fish grows up to 60 feet.
One kind of fish looks as if it has a little horse’ s head. It is called a sea horse. (Q14) It doesn’ t swim very well. A sea horse is mostly pushed along by the moving water. What does it do when it wants to stay in one place It takes hold of plants (Q15) with its little tail.
How long does the biggest fish grow up to （）
[多选题]《长江保护法》明确长江流域经济发展和保护的原则是?
A.生态优先、绿色发展
B.共抓大保护、不搞大开发
C.统筹协调、科学规划
D.创新驱动、系统治理
[单选题]企业自备机车、车辆、（ ）和城市轨道车辆、进出口机车车辆过轨时，未经铁路机车车辆人员检查确认的禁止编入列车。
A.凹型车
B.落下孔车
C.自轮运转特种设备
D.自备货车
