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[判断题]输电线路电压在1~2kV,桩架与输电线路间的安全距离应为 1.5m以上。(  )
A.正确
B.错误

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[判断题]ZPW-2000A电码化设备室外隔离防护盒(WGFH)的作用防止移频信号干扰轨道电路接收设备。
A.正确
B.错误
[简答题]请你说出汇票转让时常见的背书方法。
[判断题]配合停电的同杆(塔)架设线路装设接地线要求与检修线路相同。
A.正确
B.错误
[单选题]砍剪山坡树木应做好防止树木向()弹跳接近导线的措施。
A.下
B.上
C.左
D.右
E.略
F.略
[简答题]当发现乘客出现逃票嫌疑等违规行为时,应立即做出判断并予以制止,大声呵斥乘客出示车票。
[简答题]氧气区域警示标识主要是指回避火源类,由火源弱到强的依次是,避免( )、( )、( )、禁止使用产生火星的工具、禁止接触热源、禁止接触易燃易爆物。
[单选题]反映客观现象规模水平的数据必须以()计量。
A.定类尺度
B.定序尺度
C.定距尺度
D.定比尺度
[判断题]从改善死料柱透气性角度出发采用中心加焦是必要的。( )
A.正确
B.错误
[单项选择]当气温≤25℃时,C30混凝土浇筑时允许间歇的最长时间为( )。
A. 180 mm
B. 210mm
C. 120mm
D. 150 mm
[单项选择]

构成动力装置的设备很多,各设备之间相互联系、相互影响、相互制约,那么对柴油机轴系带来最大危险的振形是()。
a.单点振形;
b.双节点振形;
c.三节点振形;
d.四节点振形;
e.五节点振形;
f.多节点振形。


A. a~c
B. a+b+e
C. c+d+e
D. b+c+f
[单项选择]被称为新洁尔灭是()
A. 对羟基苯甲酸酯类
B. 苯甲酸及其盐
C. 山梨酸
D. 苯扎溴铵
E. 醋酸氯乙定
[不定项选择题]资料:Directions : There is 1 passage in this part. The passage is followed by some questions or unfinished statements. For each of them there are four choices , You should decide on the best choice. Your face is the future of smartphone security. Apple made that clear last week when it unveiled the pricey iPhone X. Apple claims to have conquered many of the challenges that have prevented the widespread use offacial biometrics. But a number of computer-vision researchers say they are skeptical that a smartphone-based system like FaceID can account for things like variable lighting conditions or subtle changes in a person's appearance to create a secure-yet-practical way to unlock a phone a dozen or more times a day. Apple’s new technology does sound promising. The company says FaceID creates a “precise depth map” of one’s visage by projecting more than 30,000 infrared dots against a person’s face, then using the phone’s infrared TrueDepth camera and high-power microchip to collect and analyze the results. Users are also asked to turn their head as they scan so the phone's machine-learning algorithm can measure the face from several angles and create a more detailed 3-D map of their features. Once the map is created and stored, the iPhone X uses infrared light to help FaceID scan a person’s face even in the dark. Meanwhile, machine-learning algorithms running on the phonekeep track of changes in a person's appearance—including glasses, facial hair and hats—so the smartphone’s accuracy improves over time. Despite advances in facial recognition in recent years, it remains unclear whether FaceID will work in a variety of conditions while also keeping the iPhone X secure. Hackers, for example, quickly found a way to bypass the Samsung Galaxy S8's facial-recognition scanner when it was introduced in March: They tricked the device by simply showing it a photo of the user. FaceID’s use of 3-D facial maps could address that problem. But historically it has been a big challenge for such a system to recognize faces under different lighting conditions and from a variety of angles. Apple showed off FaceID last week under relatively controlled conditions, says Arun Ross, a professor of computer science and engineering at Michigan State University. "Clearly the demo was very interesting," he says. "But at the same time some extraordinary claims were made." Apple' s Schiller said, for example, that the chance a random person' s face could unlock someone else' s iPhone X was one in a million——much more secure than TouchI D. Ross says, however, that it is not clear how often FaceID fails to recognize its owner. When contacted, Apple declined to elaborate on Schiller' s comments. “Like all biometrics, FaceID will have a problem with revocation,” says Vitaly Shmatikov, a computer science professor at Cornell Tech. “If a password is compromised, it can be changed—but a face cannot be changed.” Apple touts its ability to secure data on its iPhones, which do not share biometric information with the company’s servers. Still, Ross says, hackers always seem to find a way around even the tightest security. What is the computer-vision researchers’ main concern of iPhone X’ s FaceID? A.They have concerns of the security and convenience of FaceI
A.
B.They don’ t believe iPhone X’ s FaceID can successfully unlock a phone every time.
C.They have doubts of its technique to overcome variable lighting and subtle change of the user’s face.
D.They are mainly worried about the smartphone’ s accuracy.
[单选题]414、下列不属于呼吸保护器具的是()。
A.A.过滤式防毒面具
B.B.强式送风机
C.C.氧气呼吸器
D.D.空气呼吸器
[判断题]变压器运行前,应进行外部检查,并根据规定进行电气试验,确认良好后方准运行。
A.正确
B.错误
[单选题]短跑运动员肌肉中,()酶活性最高。
A.乳酸脱氢酶
B.琥珀酸脱氢酸
C.苹果酸脱氢酶
D.淀粉酶
[单项选择]用SQL语言描述“在教师表中查找男教师的全部信息”,以下描述正确的是______。
[单项选择]我国汉族人口所占的比重为()
A. 90%
B. 91%
C. 92%
D. 93%
[判断题]限制价格应低于市场价格,支持价格应高于市场价格。
[单项选择]关于先张法预应力混凝土施工,下列中哪个规定是正确的()?
A. 混凝土强度不得低于C15
B. 混凝土必须一次浇灌完成
C. 混凝土强度达到50%方可放张
D. 不可成组张拉
[判断题]金属氧化物避雷器分瓷套型和复合外套型两种。
A.正确
B.错误
[单选题]在JavaScript中,关于函数的调用说法错误的是?
A.调用函数的语句也需要放置在
B.函数是可以自动执行
C.一般有函数名的函数调用是需要写出函数名后边用()填入对应的参数
D.函数使用多个参数的时候用英文逗号隔开
[判断题](单选题). 硝酰胺的水解最常用的催化剂是()
A.正确
B.错误
[单选题]依据《建筑施工安全检查标准》(JGJ59)生活垃圾应装入( )内,并应及时清理。
A.垃圾筐
B.垃圾站
C.密闭式容器
D.垃圾袋
[单项选择]关于货运机动车载物,下列说法正确的是?
A. 可超载20%
B. 宽度可超过车身1米
C. 允许超限
D. 严禁超载
[单项选择]“从群众中来,到群众中去”的工作方法和领导方法同辩证唯物主义认识论的哪个原理完全一致( )
A. 从感性认识上升到理性认识
B. 从实践到认识,从认识到实践
C. 从理性认识回到实践
D. 从认识到实践,从实践到认识
[多项选择]犯罪预备的特征是( )
A. 主观上有犯罪故意
B. 客观上实施了犯罪的预备行为
C. 事实上未能着手实行犯罪
D. 由于行为人意志以外的原因而停止
E. 为进行犯罪准备工具
[单选题]有关原发性肝癌疼痛护理的描述不正确的是
A. 护理人员要给予心理支持
B. 创造舒适、安静的环境
C. 听录音机转移病人的注意力
D. 解除病人的心理压力
E. 限制止痛药的应用
[单项选择]下列那一条不是对象-关系数据库的基本特征
A. SQL环境中支持基本数据类型扩充
B. SQL 环境中支持复杂对象
C. SQL环境中支持继承性
D. 关系的规范化程度高
[单选题]在下列影响人际关系相似性的因素中,对人际关系影响最大的是(  )
A.兴趣
B.性格
C.知识水准
D.价值观念
[单选题]TDZ1A-200/25型主断路器隔离开关延时动作的时间,受( )控制。
A.主阀
B.延时阀
C.起动阀
D.传动风缸
[单选题]10kV及以下电气设备不停电的安全距离是( )米。
A.0.35;
B.0.7;
C.1.5。
[单项选择]  From the beginning, the idea of a finite universe ran into its own obstacle, the apparent need for an edge, a problem that has only recently been grappled with. Aristotle’’s argument, that the universe is finite, and that a boundary was necessary to fix an absolute reference frame, held only until scientists wondered what happened at the far side of the edge. In other words, why do we not redefine the "universe" to include that other side   Riemann ingeniously replied by proposing the hypersphere, the three- dimensional surface of a four-dimensional ball. Previously it was supposed that the ultimate physical reality must be a Euclidean space of some dimension, and thus if space were a hypersphere, it would need to sit in a four-dimensional Euclidean space that allows us to view it from the outside. But according to Riemann, it would be perfectly acceptable for the universe to be a hypersphere and not embedded in any higher-dimensional space; nature need not therefore cling to the a
A. The second paragraph limits the applicability of the theoretical method described in the first paragraph.
B. The second paragraph provides further elaboration on why an assertion made at the end of the first paragraph proves true in most cases.
C. The second paragraph provides additional information in support of a hypothesis stated in the first paragraph.
D. The second paragraph provides an example of a case in which the assumption described in the first paragraph is warranted.
E. The second paragraph describes a phenomenon that has the same cause as the phenomenon described in the first paragraph.
[单选题]铸钢摇枕易发生裂纹部位为()。
A.A区
B.B区
C.A、B区
D.导框处
[简答题]某施工企业通过投标获得了某住宅楼的施工任务,地上建筑为18层、地下为3层,钢筋混凝土剪力墙结构;业主与施工单位、监理单位分别签订了施工合同、委托监理合同。施工单位(总包单位)将土方开挖、外墙涂料与防水工程分别分包给专业公司,并签订了分包合同。
施工合同中说明:建筑面积23420m2,工程工期450天,2003年8月1日开工,2004年11月25日竣工,工程造价3165万元。
合同约定结算方法:合同价款调整范围为业主认定的工程量增减、设计变更和洽商;外墙涂料、防水工程的材料费,调整依据为本地区工程造价管理部门公布的价格调整文件。
合同履行过程中发生下述几种情况,请按要求回答问题。
监理工程师检查厕浴间防水工程,发现有漏水房间,逐一记录并要求防水公司整改。防水公司整改后向监理工程师进行了口头汇报,监理工程师即签证认可。事后发现仍有部分房间漏水,需进行返工。问返修的经济损失由谁承担监理工程师有什么错误
[单项选择]()涂层很容易被强溶剂侵蚀,发生软化现象。
A. 硅酸锌
B. 环氧树脂
C. 酚醛树脂
[多选题]机械在寒冷季节使用,针对机械特点应做好( )工作。
A.擦拭
B.注油
C.防冻
D.防滑
[单项选择]he oil()in a source bed, and a marine shale.
A. dominates
B. originates
C. terminates
D. fascinates

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