热门试题:
[单项选择]选用表面安装电位器时，必须了解（）。
A. 任意两个引出焊片的尺寸
B. 3个引出焊脚的尺寸、相互间的距离
C. 中心抽头的尺寸
D. 两固定端的尺寸
[单选题]教师劳动的复杂性特点包括教师劳动的对象、过程、( )和内容是复杂的。
A.品德的需要
B.能力的需要
C.专业的需要
D.技能的需要
[单选题]【单选题】关于单排双排脚手架立杆接头，下列说法错误的是 O
A.立杆接头应采用对接扣件连接
B.相邻立杆接头可以设置在同步内
C.同步内立杆接头应间隔1根立杆错开布置，接头错开距离不应小于500mm
D.接头距离主节点不大于步距的1/3
[单项选择]
What if you were having a heart attack, but no one believed you A new study of 515 female heart-attack survivors (aged 29 to 97) reveals that this happens all too often.
In the study, 95% said they knew something was seriously wrong a month or more before their heart attack, but none of their doctors had even told them that they had heart disease. And when their heart attack happened, fewer than 30% had chest pain or discomfort, the classic warning signs that most emergency room physicians and nurses look for.
One study volunteer in her mid-30s had a heart attack while driving her children to school. "She had repeatedly sought help for early warning symptoms," says study author Jean McSweeney of the University of Arkansas for Medical Sciences. Despite abnormal cardiac stress test results, she got no treatment. Two weeks later, she nearly died.
Here are the signs that a heart attack may be weeks away: extreme fatigue, disturbed sleep, shortness of
A. no one believes women’s study
B. few people believe women’s warning signs
C. women’s heart attack is often ignored
D. women always realized their dangers
[多项选择]设立公司时应当先向公司登记机关申请公司名称的预先核准。远大公司的5家发起人应依法从事以下 ( )行为。
A. 将公司发起人签署的公司名称预先核准申请书递交给公司登记机关
B. 同时提交发起人的法人资格证明或自然人的身份证明
C. 公司名称不得使用《中华人民共和国反不正当竞争法》的禁用标记，而且必须在名称中表明“股份有限公司”的字样
D. 预先核准的公司名称被登记后，有6个月的保留期。在此期间，远大科技股份有限公司可以将其用于经营活动，或依法转让
[单项选择]下面哪一口号不是五四运动期间学生在示威游行时高呼的（）
A. “打倒列强，除军阀”
B. “废除二十一条”
C. “拒绝在和约上签字”
D. “外争国权，内惩国贼”
[单项选择]关于妊娠代谢的变化，哪项是错误的
A. 蛋白质代谢——负氮平衡
B. 脂类代谢——血脂升高
C. 糖代谢——胰岛素分泌增加
D. 铁——妊娠最后3个月需要量增加
E. 钙及磷——妊娠后期需要量增加
[单项选择]Music comes in many forms; most countries have a style of their own. At the turn of the century when jazz was born, America had no prominent (31) of its own. No one knows exactly when jazz was invented, or by whom. But it began to be (32) in the early 1900s. Jazz is America’s contribution to popular music. In contrast to classical music, which (33) formal European traditions, jazz is spontaneous and free form. It bubbles with energy, expressing the moods, interests, and emotions of the people. In the 1920s jazz (34) like America, and as it does today. The (35) of this music are as interesting as the music itself. American Negroes, or blacks, as they are called today, were the jazz pioneers. They were brought to Southern States (36) slaves. They were sold to plantation owners and forced to work long (37) . When a Negro died, his friend and relatives (38) a procession to carry the body to the cemetery. In New Orleans, a baud often a
A. noticed
B. found
C. listened
D. heard
[单选题]当给电池充电时，电池正极发生电解反应从而电解出锂离子和什么物质？
A.dba
B.pm
C.自由电子
[单项选择]常见的货币政策工具不包括（）。
A. 存款准备金政策
B. 再贴现政策
C. 公开市场业务
D. 道义劝告
[单选题]正线道岔（直向）与曲线超高顺坡终点之间的直线段长度：线路允许速度大于160km/h时不应小于70m，困难条件下不应小于（）。《修规》第3.9.6条
A.20m
B.30m
C.40m
D.50m
[单选题]内旋斜视的代偿头位向( )。
A.健眼侧倾斜
B.向患眼侧倾斜
C.向健眼方侧转
D.向患眼方侧转
[单选题]常用的品酒方法（ ）
A.一杯法
B.两杯法
C.四杯法
D.五杯法
[单项选择]（）指根据估计的总销售收入和估计的销售量来制定价格的一种方法。
A. 成本加成定价法
B. 目标定价法
C. 认知价值定价法
D. 价值定价法
[单选题] 依据《水利工程建设安全生产管理规定》,项目法人应当在拆除工程或者爆破工程施工()日前,将相关资料报送水行政主管部门流域管理机构或者其委托的安全生产监督机构备案。
A.10.
B.15.
C.20.
D.30.
[单选题]大型养路机械连挂进入封锁区间的作业地点后，需临时改变计划时，施工负责人应使用无线通信设备通知各车( )。
A.作业人员
B.司机长
C.机组人员
D.运行司机
[多选题]混凝土施工，下列有关泵送混凝土描述正确的是( )。
A.支腿应支承在水平坚实的地面$;$泵启动时，人员不得进入末端软管可能摇摆触及的危险区域
B.泵启动时，人员不得进入末端软管可能摇摆触及的危险区域
C.建筑物边缘作业时，操作人员应站在安全位置，使用辅助工具引导末端软管，不得站在建筑物边缘手握末端软管作业
D.泵输送管线及臂架应与带电线路保持一定的安全距离
[单选题]93
关于HDP显示技术的描述,下面不正确的是?
A.对于非自然图像采用无损压缩。
B.只支持华为特定的自研图像压缩算法。
C.能自动识别整幅图像中的文字、Windows图框、线条等非自然图像。
D.相片、图片等自然图像采用合适的压缩率进行有损压缩。
[单选题]施工组织设计、安全专项施工方案,应由有关部门审核,施工单位()、监理单位项目总监批准。
A.董事长
B.安全负责人
C.技术负责人
D.总经理
[单选题]关于前列腺癌的描述不正确的是
A.MRI显示前列腺癌主要靠T2加权像
B.前列腺癌是男性最常见的恶性肿瘤之一
C.前列腺癌主要发生在中央叶
D.精囊受侵表现为T2加权像呈低信号肿块
E.淋巴结转移首先累及闭孔和髂内动脉旁组淋巴结
[单选题]在《国网陕西省电力公司关于推进安全生产“四双”管理的指导意见》中，关于培训计划说法正确的是（ ）。
A.培训计划主要是针对特种作业人员和各类外来人员
B.培训计划是培训中心对安规学习制定培训计划并组织实施
C.培训计划是各级专业管理部门负责提出各专业安全教育培训需求及重点内容制定计划并组织实施
[单选题]曲线半径250m＜R≤350m的正线曲线正矢计划维修容许偏差管理值：圆曲线正矢连续差为（）。
A.6mm
B.18mm
C.12mm
D.9mm
[单选题]商用无线引入系统车站POI采用机柜安装方式，POI设备装入（ ）寸标准机柜，与各运营商端口间通过N射频接头进行连接。
A.15
B.17
C.19
D.21
[不定项选择题]Just how much does the Constitution protect your digital data? The Supreme Court will now consider whether police can search the contents of a mobile phone without a warrant if the phone is on or around a person during an arrest.
California has asked the justices to refrain from a sweeping ruling, particularly one that upsets the old assumptions that authorities may search through the possessions of suspects at the time of their arrest. It is hard, the state argues, for judges to assess the implications of new and rapidly changing technologies.
The court would be recklessly modest if it followed California’s advice. Enough of the implications are discernable, even obvious, so that the justice can and should provide updated guidelines to police, lawyers and defendants.
They should start by discarding California’s lame argument that exploring the contents of a smart phone—a vast storehouse of digital information—is similar to, say, going through a suspect’s purse.The court has ruled that police don't violate the Fourth Amendment when they go through the wallet or pocketbook of an arrestee without a warrant. But exploring one’s smart phone is more like entering his or her home. A smart phone may contain an arrestee’s reading history, financial history, medical history and comprehensive records of recent correspondence. The development of “cloud computing,” meanwhile, has made that exploration so much the easier.
Americans should take steps to protect their digital privacy. But keeping sensitive information on these devices is increasingly a requirement of normal life. Citizens still have a right to expect private documents to remain private and protected by the Constitution’s prohibition on unreasonable searches.
As so often is the case, stating that principle doesn’t ease the challenge of line-drawing. In many cases, it would not be overly onerous for authorities to obtain a warrant to search through phone contents. They could still trump Fourth Amendment protections when facing severe, exigent circumstances, such as the threat of immediate harm, and they could take reasonable measures to ensure that phone data are not erased or altered while a warrant is pending. The court, though, may want to allow room for police to cite situations where they are entitled to more leeway.
But the justices should not swallow California’s argument whole. New, disruptive technology sometimes demands novel applications of the Constitution’s protections. Orin Kerr, a law professor, compares the explosion and accessibility of digital information in the 21st century with the establishment of automobile use as a digital necessity of life in the 20th: The justices had to specify novel rules for the new personal domain of the passenger car then; they must sort out how the Fourth Amendment applies to digital information now.
The author believes that exploring one’s phone content is comparable to ______.
In Paragraph 5 and 6, the author shows his concern that ______.
A.principles are hard to be clearly expressed
B.the court is giving police less room for action
C.phones are used to store sensitive information
D.citizens’ privacy is not effectively protected
[单选题]加快推进省管产业采购上平台。产业部组织完成省管产业采购目录清单编制、采购计划统筹与申报、省管产业单位平台账号注册、评标专家管理等基础准备工作，物资部门做好业务指导和协调配合，确保统一管理，统筹安排，有效实施。2021年3月底前实现省管产业所有采购公告、中标结果通过平台发布；（）底前，实现省管产业所有采购活动全流程纳入平台实施。
A.44256
B.44348
C.44440
[单选题](48031)线路允许速度200 km/h≥vmax>120km/h，焊缝凹陷大于（ ）时，应及时处理。(1.0分)
A.0.5㎜
B.1.5㎜
C.1mm
D.0.3㎜
[多选题]增加建筑构件稳定性的方法有( )( 中 )
A.增加截面尺寸
B.增加表面非燃性保护层
C.增加构件的耐火性能
D.减少有效荷载量值
[单选题]长轨车运行中，人员必须离开轨端（）以外，并严禁在长轨上走动。《安规》第3.4.2条
A.3m
B.5m
C.10m
D.1m
[单选题]两台以上压路机在同一区域作业时,前后距离不得小于( ).
A.1m
B.2m
C.3m
D.4m
[单选题]对于油浸式电抗器（变压器）在额定电压、额定电流、额定频率和允许谐波电流分量下，油箱壁振动最大值不大于多少μm（p-p）？
A.20
B.30
C.60
D.100
[单选题]观察诊断应对( )有一定的掌握,才能发挥较好的效果。
A.汽车结构
B.工作原理
C.常见故障现象
D.其它选项全是
[判断题]超限运输车辆通行证由各省或地市相关部门核发,如有疑问可以联系12122查询。 ( )
A.正确
B.错误
[单选题]若将一段电阻为R的导线均匀拉长至原来的两倍，则其电阻值为（ ）。
A. 2R
B. R/2
C. 4R
D. R/4
[单选题]（ ）负责将列车运行中发生的问题及使用紧急制动装置的情况，及时报告列车调度员。
A.动车组列车司机
B.随车机械师
C.列车长
D.添乘人员
[多选题]镙8服务热线班座席员回访客户时间为( )。
A.8：00-12：00
B.9：00-12：00
C.14：30-21：00
D.14：00-21：00
