热门试题:
[多选题]下列液体属丙类的有( )。[易]
A.闪点不小于 60℃的柴油
B.甲醇
C.溶剂油
D.机油
[单选题]在飞机上担任客舱乘务员的人员,应当通过局方按照本规则批准的训练大纲训练并经合格证持有人检查合格。在按照本规则运行时,应当持有现行有效的( )和合格证持有人颁发的( C )。CCAR-121第477条(a)款
A.航空人员体检合格证
B.中国民航空勤登机证
C.客舱乘务员训练合格证
D.危险品训练合格证
[单选题]高低压线路同杆架设的线路排列规定是()。
A. 高压在上
B. 低压在上
C. 高、低压在同一横线上
D. 高、低压在同一水平线上垂直排列
[判断题]钢包吹氩是目前应用最广泛的一种简易炉外精炼方法，它不仅可以均匀钢液成分和温度还能部分去除钢中的气体和非金属夹杂物。（ ）
A.正确
B.错误
[单项选择]合同履行的前提和依据是( )。
A. 有效的合同
B. 合同法
C. 诚实信用原则
D. 合同生效
[多项选择]关于基金管理人和基金托管人从事基金管理活动取得收入有关的税收，以下说法正确的有（）。
A. 依税法规定暂免征收营业税
B. 依税法规定征收营业税
C. 依税法征收企业所得税
D. 依税法规定暂免征收企业所得税
[单选题]薪酬福利保障管理审计的主要内容中不包括:(____)
A.工资计划管理
B.工资发放及列支渠道管理
C.薪酬制度管理
D.企业负责人业绩考核兑现
[单选题]货车轮缘厚度辅修限度不小于( )。
A.22mm
B.23mm
C.24mm
D.26mm
[多项选择]感染性休克的处理原则是（）。
A. 控制感染
B. 纠正酸中毒
C. 补充血容量
D. 应用α受体阻滞剂
E. 纠正碱中毒
[单项选择]We were suddenly _________ when I was speaking to John on the phone.
A. hung
B. cut down
C. cut off
D. hung back
[多选题]禁止V 停作业的项目有（ ）
A.有可能影响非停电线路设备状态的作业（如调整或更换软横跨、更换软(硬)横跨钢柱、交叉渡线处的线岔及改变其它穿越上下行线路的线索位置等）；
B.不同供电臂同杆架设区段的接触网作业；
C.双线隧道、双线下承式桥梁内、双线路腕臂处；
D.上、下行共用一条回流线的回流线上作业。
[单项选择]哪个部件上有驱动装置可以用于人工操纵放出或收上反推（）
A. 同步轴
B. 同步锁
C. 作动筒
D. 人工松锁手柄
[单选题]职工持铁路乘车证（符合免费使用卧铺规定的）乘坐火车时，以本人开始乘坐本次列车开车时刻计算，从20：00时至次日7；00之间，在车上过夜（）小时以上，准予免费使用卧铺。
A.12
B.10
C.8
D.6
[单选题]在（ ）系统，相与地之间通过电弧形成的连接视为短路
A.中性点直接接地
B.中性点经消弧线圈接地
C.中性点不接地
[单选题]站内( )须保证能通过超限货物列车。
A.牵出线
B.正线
C.货物线
D.到发线
[判断题]高熔点氧化物是有优良的抗氧化性。
A.正确
B.错误
[判断题]2.90依据《机动车查验工作规程》GA801-2019规定，确定核定载人数时，对驾驶室前排核定乘坐3人的汽车，应实车测量驾驶室（区）内部宽度。
A.正确
B.错误
[填空题]如果报表的数据量较大，而需要快速查看报表设计的结构、版面设置、字体颜色、大小等，则应该使用______视图。
[单项选择]下列可以作为保证人的有（）。
A. 学校
B. 医院
C. 银行
D. 企业
[判断题]( )在不需要使用停车信号或移动减速信号防护的区间线路上作业，应在作业地点两端500m～1000m处列车运行方向左侧（双线在线路外侧）的路肩上设置作业标。
A.正确
B.错误
[多项选择]合同按其法律效力可分为（）合同。
A. 有效合同
B. 无效合同
C. 效力待定合同
D. 可撤销合同
E. 等效合同
[单选题]轮机构的组成中凸轮机构是由凸轮、( )和机架3个构件组成。
A.主动件
B.从动件
C.运动件
D.辅助性
[单项选择]The modem man is suffering ______.
A. more stress than the caveman
B. less stress than caveman
C. different stress from the caveman
D. same stress as the caveman
[不定项选择题]共用题干
Rainmaking
1 The idea of rainmaking is almost as old as man,but it was not until 1946 that man succeeded in
making rain.In ancient times,rainmakers had claimed to bring rain by many methods:dancing,singing,
killing animals(including humans).
2 For a long time,men have understood where rain comes from.Water from the surface of oceans and
lakes becomes part of the air,where it forms clouds from which rain falls.But exactly what starts the forma-
tion of raindrops was not known until quite recently.A man named John Aitken proved that drops of water
gather around tiny bits of dust or other matter. The centers of the drops are so small that the human eye can-
not see them.Without such centers,it seems raindrops do not form.
3 During World War Ⅱ,Dr. Irving Langmir,and his assistant Schaefer,were hired by the General
Electric Company to study how and why ice forms on the wings of airplanes.They went to a mountain in New
Hampshire,where snowstorms are common and cold winds blow. They were surprised to find that often the
temperature of the clouds surrounding them was far below the freezing point,and yet ice did not form in the
clouds.
4 After the War,Schaefer experimented with a machine that created cold,moist air similar to the air
found in clouds.To imitate the moist air of a cloud.Schaefer would breathe into the machine.Then he
would drop into the freezer a bit of powder,sugar,or some other substance.For weeks and months he tried
everything he could imagine.Nothing happened.No crystals of ice were formed.None of the substances
would serve as the center of a snow crystal or raindrops.
5 One July morning,Schaefer was dropping in bits of various substances and watching the unsuccessful
results.Finally,a friend suggested that they go to eat lunch and Schaefer went with him.As usual,he left
the cover of the freezer up,since cold air sinks and would not escape from the box.
6 Returning from lunch,Schaefer found that the temperature of the freezer had risen to a point higher
than that required for ice crystals to remain solid.There were two choices now.He could close the cover and
wait for the freezer itself to lower the air temperature,or he could make the process occur faster by adding dry
ice a gas in solid form that is very,very cold.He chose the latter plan.As he dropped the steaming white
dry ice into the freezer,he happened to breathe out a large amount of air. And there,before his eyes,it
happened ! He had made ice crystals,not by adding centers to the moisture,but by cooling the breath so
much that the liquid had to form crystals!Then he began to blow his breath into the freezer and drop large
pieces of dry ice through it to create crystals which became a tiny snowstorm falling slowly to the floor of his
laboratory.
7 After planning carefully,Schaefer made an experiment by dropping dry ice from his plane to the
clouds below him.As was expected,snow formed and fell from the bottom of the cloud.Schaefer succeeded.
He made history.
Schaefer found a way of how to make ice crystals_________.
A.imaginatively
B.recently
C.carefully
D.unscientifically
E.accidentally
F.satisfactorily
[单选题]绝缘型地线耐张金具安装，放电间隙安装方向（ ）。［《国家电网公司输变电工程标准工艺（三） 工艺标准库（2016年版）》，工艺编号：0202010801］
A.朝上
B.朝下
C.朝里
D.朝外
[单项选择]多脏器功能障碍Marshall评分的主要缺陷是（）
A. 参数多
B. 对病死率预测不准确
C. 只反映常见脏器功能的一个指标，不能全面反映其功能状态
D. 对预后预测不准确
E. 计算PaO2／FiO2时不考虑是否使用机械通气、通气方式和是否使用PEEP
[单选题] 卷烟企业可以根据向零售客户提供的服务项目来划分测评框架,以下选项不属于服务项目的有( )。
A.功能需求满足
B.货源供应
C.订货送货
D.意见处理
[判断题] ( )阀杆的行程与阀门定位器的输出信号大小成正比。
A.正确
B.错误
[单选题]对难以做到与电源完全断开的检修线路、设备，可（ ）其与电源之间的电气连接。
A.断开
B.拆除
C.隔离
D.拉开
[单选题][T]BC003512
抽油机井停机时应关闭回压阀门，放净死油。冬季停抽时间长应进行（ ）。
A.热洗
B.放空
C.观察
D.扫线
[判断题]单程票付费区闸门误用，票卡已回收，发售免费出站票出站。
A.正确
B.错误
