热门试题:
[单项选择]
For me, scientific knowledge is divided into mathematical sciences, natural sciences or sciences dealing with the natural world (physical and biological sciences), and sciences dealing with mankind (psychology, sociology, all the sciences of cultural achievements, every kind of historical knowledge).
Apart from these sciences is philosophy, about which we will talk later. In the first place, all this is pure or theoretical knowledge, sought only for the purpose of understanding, in order to fulfill the need to understand that is intrinsic and con-substantial to man. What distinguishes man from animals is that he knows and needs to know. If man did not know that the world existed, and that the world was of a certain kind, that he was in the world and that he himself was of a certain kind, he wouldn’t be man. The technical aspects or applications of knowledge are equally necessary for man and are of the greatest importance, because they also contribute to defining him
A. innovations
B. the natural sciences
C. technical applications
D. apparently useless information
[单项选择]液压自动绞缆机一般是自动控制()。
A. 液压马达转速
B. 液压泵流量
C. 液压马达工作油压
D. 液压泵功率
[单选题]圆筒型轴承的顶部间隙是椭圆轴承的( )。
A.2倍;
B.1.5倍;
C.1倍;
D.1/2倍。
[单选题]定位管外露部分应符合设计要求,外露长度不小于(),定位管应带管帽。
A.50mm
B.60mm
C.80mm
D.100mm
[单项选择]将0.0121、25.64、1.05782和0.20010四个数相加,其结果的有效数字应是()。
A. 3位
B. 4位
C. 5位
D. 6位
[多项选择]撤回要约的通知应当在( )到达受要约人。
A. 要约到达受要约人之前
B. 受要约人发出承诺通知之前
C. 要约到达受要约人同时
D. 承诺到达对方之前
E. 要约在发生效力之后
[单选题]国家档案主管部门应当建立健全( )相关档案收集、整理、保护、利用工作机制。
A.突发事件应对活动
B.重大事件应对活动
C.突发活动
D.重要活动项目
[单项选择]某地区经济落后,仍面临感染性疾病的较大压力,人群期望寿命相对经济发达地区短,其心血管疾病的防治策略重点在于()。
A. 一级预防
B. 进行心血管疾病主要危险因素的健康教育和健康促进
C. 治疗现患病人
D. 消除或减少致病危险因素的流行
E. 以上均不对
[单选题]在电缆隧道内进行检修工作时,应进行( )通风。
A.自然
B.连续机械
C.30分钟
[单选题]无线调车灯显装置信号显示( )为推进信号。
A.一个绿灯
B.绿灯闪数次后熄灭
C.一个黄灯闪后绿灯长亮
D.绿、黄灯交替后绿灯长亮
[名词解释]聚焦扫描激光显微镜(confocal scanning laser microscope,CSLM)
[单选题]
麻醉家兔的实验中,动物进行气管插管,结扎左侧颈总动脉,可能出现的现象包括
A.夹闭侧窦神经传入活动增加
B.平均动脉压升高
C.外周血管舒张
D.心迷走神经的紧张性升高
E.心交感神经的紧张性降低
[判断题]在拆除工程作业中,发现不明物体,应停止施工,不用采取相应的应急措施,保护现场并应及时向有关部门报告( )
A.正确
B.错误
[判断题]低电压保护回路断线发信号时,要及时退出BZT,更换PT二次回路交流保险。()[1.0分]
A.正确
B.错误
[多选题]不是离心泵最常用的调节方法是( )。
A.改变吸入管路中阀门开度
B.改变出口管路中阀门开度
C.安装回流支路,改变循环量的大小
D.车削离心泵的叶轮
[判断题]中国的立法机构由全国人民代表大会和地方各级人民代表大会组成。
[简答题]什么是三相四线制供电,它适用于什么地方?
[单选题] 以同样的时间重复完成( )的工作,这是流水段法的特点。
A.最多
B.最少
C.不同样
D.同样
[多选题](多选题)《固定容规》规定:用于( )介质、液化气体压力容器上的液位计,有防止泄漏的保护装置。
A.可燃
B.易燃介质
C.毒性程度为极度或高度危害
[单选题](单选题)尿毒症病人口腔有
A. 氨味
B. 大蒜味
C. 肝臭味
D. 组织坏死的臭味
E. 烂苹果味
[单选题]华夏卡持卡人在同城他行自助设备上办理了向其他华夏卡的卡卡转帐时,手续费由( )承担
A.转入方持卡人
B.开卡行
C.受理行
D.转出方持卡人
[判断题]工作许可人在完成施工作业现场的安全措施后,还应对工作负责人指明带电设备的位置和注意事项。
A.正确
B.错误
[单项选择]A person;s home is as much a reflection of his personality as the clothes he wears,the food he eats and the friends with whom he spends his time.Depending on personality,most have in mind a(n)“ (1) home”.But in general,and especially for the student or new wage earners,there are practical (2) of cash and location on achieving that idea.
Cash (3) ,in fact,often means that the only way of (4) when you leave school is to stay at home for a while until things (5) financially.There are obvious (6) of living at home—personal laundry is usually (7) done along with the family wash;meals are provided and there will be a well-established circle of friends to (8) .And there is (9) the responsibility for paying bills,rates,etc.
On the other hand, (10) depends on how a family gets on.Do your parents like your friends You may love your family— (11) do you like them Are you prepared to be
A. concerns
B. issues
C. advantages
D. problems
[单选题]临终病人的生理评估正确的是 ( )p522
A.肌肉张力丧失
B. 循环功能减退
C.知觉改变
D.以上都对
[判断题]【判断题】锅炉的给水管应采用无缝钢管,排污管可采用有缝钢管。( )
A.正确
B.错误
[单选题]施工机具和安全工器具入库、出库、使用前应(),禁止使用损坏、变形、有故障等不合格的机具和安全工器具。
A.检查
B.试验
C.鉴定
D.擦拭
E.略
F.略
[多选题]局《铁路旅客运输服务质量规范》中要求( )邮政车不准有非值乘人员乘坐。
A.乘务员室
B.广播室
C.行李车
D.发电车
[单项选择]除阿是穴外,治疗头痛的主穴是()
A. 百会、上星、头维、合谷
B. 百会、太阳、风池、合谷
C. 头维、大椎、风府、外关
D. 百会、内关、合谷、三阴交
E. 太阳、印堂、合谷、太冲
[单项选择]导致X连锁无丙种球蛋白血症的原因是()
A. B细胞胞质内Bruton酪氨酸激酶基因(Btk)突变
B. μ重链基因突变
C. Igα基因突变
D. BLNK基因突变
E. λ5/14.1基因突变
[判断题]采取平托等方式移送人员,禁止生拉硬拽造成二次伤害,视情况实施心肺复苏,移交医疗救护处置。
A.正确
B.错误
[填空题]如果对于给定的一组数值,所构造出的二又树的带权路径长度最小,则该树称为______。
[简答题]行洪桥涵孔径或桥下净空不足时,应采取哪些措施?