热门试题:
[填空题]热力学第一定律的实质是( )与( )定律在热力学上应用的一种特定形式。
[单选题]某变电站10kV母线上接有电容器、串联电抗率K=6%,母线短路容量S<sub>k</sub>=100MVA。当母线上接有产生n次(即3次)谐波的非线性负荷,电容器容量为()Mvar时,将发生高次谐波并联谐振。
A.5.11
B.6.24
C.7.38
D.8.49
[多项选择]一般纳税人有下列情形之一的,应按销售额依照增值税税率计算应纳税额,不得抵扣进项税额,也不得使用专用发票( )。
A. 对纳税人兼营免税项目或非应税项目的
B. 会汁核算不健全的
C. 不能提供准确税务资料的
D. 纳税人购买或销售免税货物所发生的运输费用
E. 符合一般纳税人条件,但不申请办理一般纳税人认定手续的
[判断题]成段更换扣件作业,对丝杆损坏的应用套筒板牙进行重新车丝,上好扣件。( )
A.正确
B.错误
[单项选择]下面哪一个打开备用电源的操作顺序是正确的?
A. I 打开Standby electrical power。II 打开E-inverter。 III 打开TRU。
B. I 打开Standby electrical power。II 打开TRU。 III 打开E-inverter。
C. I 打开E-inverter。II 打开TRU。 III 打开Standby electrical power。
D. I 打开TRU。II 打开E-inverter。 III 打开Standby electrical power。
[判断题]进出配电站、开闭所应随手关门。
A.正确
B.错误
[单选题]消防中队执勤人员接到出动命令后,必须按照规定着装登车,首车驶离车库时间一般不得超过( )分钟。
A.1
B.2
C.3
D.0.8
[多项选择]骨折的形态有()
A. 线性
B. 孔状
C. 粉碎性
D. 凹陷性
E. 脱臼
[单项选择]卷筒应与牵引绳保持垂直。牵引绳应从卷筒下方卷入,且排列整齐,通过磨芯时不得重叠或相互缠绕,在卷筒或磨芯上缠绕不得少于5圈,绞磨卷筒与牵引绳最近的转向滑车应保持()m以上的距离。
A. 3
B. 4
C. 5
D. 6
[填空题]His recommendation that the Air Force (investigate) ______ the UFO sighting was ap proved by the commission.
[单项选择]数字中继线上一般传输的是()
A. NRZ码
B. HDB3码
C. AMI
D. 双极归零脉冲
[单项选择]设计合同中约定的费用为估算设计费,需按批准的()核算设计费。
A. 扩大的初步设计概算
B. 施工图预算
C. 投资估算算
D. 初步设计概算
[单选题]交流真空接触器-熔断器组合电器,()的使用空间。
A.拓展了接触器
B.限制了接触器
C.限制了熔断器
[多选题]光纤按传输模数量可分为( )。
A. 单模光纤
B. 多模光纤
C. 石英光纤
D. 套塑光纤
[单选题]影响气道阻力最重要的因素是
A.气流速度
B.气流形式
C.呼吸时相
D.呼吸道口径
E.呼吸道长度
[单选题]( )是对经过识别和计量的风险,采取分散、对冲、转移、规避和补偿等策略进行有效管理和控制风险的过程。
A.风险控制
B.风险监测
C.市场风险
D.风险识别【命题依据】教材第二部分,第五章第二节
[判断题]驼峰调车信号机点灯电路采用单断接线。
A.正确
B.错误
[单项选择]在我国现代文学史上曾写出了《蔡文姬》、《雷雨》、《龙须沟》等作品的三位作者分别是:()
A. 夏衍、茅盾、老舍
B. 郭沫若、曹禺、老舍
C. 田汉、茅盾、夏衍
D. 田汉、曹禺、老舍
[单选题]古装影视作品在国内影视市场上久盛不衰,但其中众多情节的设置与历史实际不符,下列影视情节与历史实际相符的是()。
A.战国后期,秦朝与其他国家的交战中使用大量火药
B.三国时期,魏蜀交战使用云梯攻城
C.宋朝时期,穷苦人家每日食用红薯
D.在唐朝初期,学堂里的老师教授《三字经》
[单选题]( )只适用与扑救600伏以下的带电设备的火灾。
A.泡沫灭火器;
B. 二氧化碳灭火器;
C.干粉灭火器;
D.1211灭火器。
[单选题]邓小平说:美好的前景如果没有切实的措施和工作去实现它,就有成为空话的危险。这说明()
A.社会实践是联系理想和现实的桥梁
B.有了理想并不意味着成功,更不意味着已经成功
C.把理想转变为现实不需要艰苦奋斗、勇于实践
D.只要付诸行动,人们对于美好未来的向往和追求都能成为现实
[单选题]立式钻床的主要部件包括主轴变速箱( )主轴和进给手柄。
A.进给机构
B.操纵机构
C.进给变速箱
D.铜球接合子
[单项选择]咳粉红色泡沫痰的是
A. 肺炎
B. 急性肺淤血
C. 支气管炎
D. 支气管扩张
E. 支气管哮喘
[多选题] 吊篮安装完毕(含二次移位),应由哪些单位进行验收?
A.施工单位
B.建设单位
C.监理单位
D.使用单位
E.出租单位
[单项选择]
The word conservation has a thrifty (节俭的) meaning. To conserve is to save and protect, to leave what we ourselves enjoy in such good condition that others may also share the enjoyment. Our forefathers (祖先) had no idea that human population would increase faster than the supplies of raw (天然的) materials; most of them, even until very recently, had the foolish idea that the treasures were "limitless and inexhaustible". Most of the citizens of earlier generations knew little or nothing about the complicated (复杂的), and delicate system that runs all through nature, and which means that, as in a living body, an unhealthy condition of one part will sooner or later be harmful to all the others.
Fifty years ago nature study was not part of the school work; scientific forestry was a new idea; timber was still cheap because it could be brought in any quantity from distant woodlands; soil destruction and river floods were not national problems; nobody had yet studied long-te
A. Our living space on the earth is getting smaller and smaller.
B. Our living space should be measured in cubic volume.
C. We need to take some measures to protect space in volume.
D. We must create better living conditions for both birds and animals.
[单选题]井口附近的近井点的精度,对于测设它的起始点来说,其点位中误差不得超过_()厘米,后视边方位角中误差不得超过±10″。
A. ±3
B. ±5
C. ±7
D.±10
[单项选择]
The U.S. Supreme Court’s decision Monday to let stand a ruling in an online defamation case will make it more difficult to determine correct legal jurisdictions in other Internet eases, legal experts said.
By opting not to take the case, the high court effectively endorsed a lower court’s decision that a Colorado company that posts ratings of health plans on the Internet could be sued for defamation in a Washington court. The lower court ruling is one of several that makes it easier for plaintiffs to sue Web site operators in their own jurisdictions, rather than where the operators maintain a physical presence.
The case involved a defamation suit filed by Chehalis, Wash.-based Northwest Healthcare Alliance against Lakewood, Colo. -based Healthgrades.com. The Alliance sued in Washington federal court after Healthgrades. com posted a negative ranking of Northwest Healthcare’s home health services on the Internet. Healthgrades. com argued that it sh
A. more liable to make negative ratings.
B. more dubious about jurisdictions.
C. more encouraged to launch defamations.
D. more cautious in their offerings.
[单选题]若集中器不带本地交流模拟量输入功能,则只需为()号端子提供三相电压即可。
A.1、4、7、10
B.2、5、8、10
C.3、6、9、11
D.2、5、8、11
[单项选择]低温甲醇洗脱除变换器中的酸性气体是()过程。
A. 化学吸收
B. 物理吸收
C. 吸附
D. 洗涤
[判断题]违反“一机两用”规定,或者擅自拆除监控程序、逃避监控、扰乱上网注册工作的,给予警告处分;造成严重后果的,给予记过处分。( ) (中)(基础知识)
A.正确
B.错误
[单项选择]有如下程序:
* * *主程序:P.prg* * * * * *子程序:P1.prg* * *
SET TALK OFF X2=X2+1
STORE 2 TO X1,X2,X3 DO P2
X1=Xl+1 X1:Xl+1
DO PI RETURN
xl+x2+x3 * * *子程序:P2.prg* * *
RETURN x3=x3+l
SET TALK ON RETURN TO MASTER
执行命令DOP后,屏幕显示的结果为( )。
A. 12
B. 15
C. 6
D. 5
[判断题]( )当客舱隐蔽区域冒烟/失火时,应注意不要用应急斧的斧刃砍断壁板,以防止 切断电线。
A.正确
B.错误