热门试题:
[单项选择]混合粉碎是指（）。
A. 已达到粉碎要求的粉末能及时排除
B. 已达到粉碎要求的粉末不能及时排除
C. 物料在低温时脆性增加
D. 粉碎的物料通过筛子或分级设备使粗颗粒重新返回到粉碎机
E. 两种以上物料同时粉碎
[判断题]采用 TN 系统做保护接零时，工作零线(N 线)必须通过总漏电保护器，保护零线(PE 线)必须由电源进线零线重复接地处或总漏电保护器电源侧零线处，引出形成局部 TN-S 接零保护系统。
A.正确
B.错误
[单项选择]英文字符在微型机中存储时用( )位二进制数编码。
A. 2
B. 4
C. 6
D. 8
[判断题]承、发包工程，工作票可实行“双签发”。签发工作票时，双方工作票签发人在工作票上分别签名，各自承担相应的安全责任。
A.正确
B.错误
[判断题]现在车按运用状况分为运用车和非运用车。
A.正确
B.错误
[多选题]( ) 对于与原始坐标轴不平行的直线,线性尺寸标注有以下方式()。
A. 水平
B. 平行
C. 竖直
D. 对齐
[判断题] 对于充油电流互感器应检查油位是否正常,有无渗漏现象,是电流互感器巡视 检查项目之一。( )
A.正确
B.错误
[单选题]低压带电作业时，应采取绝缘隔离措施防止相间短路和单相接地；若无法采取绝缘隔离时，则（ ）。
A.将影响作业的有电设备停电
B.继续工作
C.停止工作
D.汇报领导
[单选题]在作业中，（ ）要认真贯彻执行起重吊运方案及技术、安全要求和措施。
A.起重司机
B.起重操作员
C.起重指挥
[判断题] 情况反映类情报以提供线索性、倾向性、苗头性的情况、线索为目的的一种情报服务方式。( )
A.正确
B.错误
[单项选择]生长激素缺乏症临床表现为
A. 生长迟缓，骨成熟延迟，青春期发育延迟和智力正常
B. 生长迟缓，骨成熟延迟，青春期发育延迟和智力不正常
C. 生长正常，骨成熟延迟，青春期发育延迟和智力正常
D. 生长正常，骨成熟延迟，青春期发育延迟和智力不正常
E. 生长正常，骨成熟正常，青春期发育延迟和智力正常
[单选题]送电合闸操作应按照（ ）的顺序进行。
A.断路器（开关）—电源侧隔离开关（刀闸）—负荷侧隔离开关（刀闸）
B.断路器（开关）—负荷侧隔离开关（刀闸）—电源侧隔离开关（刀闸）
C.负荷侧隔离开关（刀闸）—电源侧隔离开关（刀闸）—断路器（开关）
D.电源侧隔离开关（刀闸）—负荷侧隔离开关（刀闸）—断路器（开关）
[单选题]弹簧管压力表出现线性误差时，应调整拉杆的活动螺丝。
A.正确
B.错误
[判断题]进行配电设备停电作业前，应断开可能送电到待检修设备、配电变压器各侧的所有线路（包括用户线路）断路器(开关)和熔断器，并验电后才能进行工作。
A.正确
B.错误
[填空题]非运行人员用绝缘棒、核相器和________定相或用钳型电流表测量高压回路的电流，应填用第二种工作票。
[单选题]160情感领域学习目标分类中，学生主动参与，积极反应，表示出较高的兴趣。学习的结果包括默认、愿意反应和满意的反应，属于（）。
A.反应
B.接受
C.组织
D.价值化
[单项选择]有关椎间盘变性描述不正确的是（ ）
A. 20岁以下髓核含水量85%～90%
B. 变性时，含水量减少，至老年降为70%
C. 变性的椎间盘以低信号为主
D. 变性椎间盘内可有混杂不规则、斑点状信号
E. 椎间盘变性均有椎间盘脱出
[单项选择]"Europe needs to import to export. " That is the slogan of the European Commission’s new strategy for securing its economic place in the world, unveiled this week by Peter Mandelson, the European Union’s commissioner for trade. The soundbite, of course, gets the economics precisely backwards: exports are the price a country must pay for its imports; Europeans toil away making stuff for others to consume only so they can in turn get their hands on the fruits of foreign labours.
But the slogan does capture two awkward truths European exporters must now confront. First, only by offering to open its own markets can the EU hope to persuade foreign countries to open theirs. But with the collapse of the Doha round of trade talks, it is not obvious to whom the Europeans should make their offers. Second, European companies are now part of elaborate global supply chains. Clumsy efforts to protect some of them from foreign competition deprive others of the cheap inputs they need to thrive i
A. EU hope to persuade foreign countries to open their markets by offering to open its owns although it is not obvious to whom the Europeans should make their offers
B. other countries were repelling EU companies at the border with high tariffs
C. European companies are now part of elaborate global supply chains
D. efforts to protect some of European companies from foreign competition may deprive others of the cheap inputs which these EU companies need to thrive in world markets
[单选题]《铁路运输安全保护条例》规定隧道周边应检查是否有( )、开矿及上方修建道路、建筑物等。
A.采石
B.植树
C.种草
D.耕种
[单项选择]在同一侧的房号为1、2、3、4的四间房里，分别住着来自韩国、法国、英国和德国的四位专家。有一位记者前来采访他们。
①韩国人说：“我的房号大于德国人，且我不会说外语，也无法和邻居交流”；
②法国人说：“我会说德语，但我却无法和我的邻居交流”；
③英国人说：“我会说韩语，但我只可以和我的一个邻居交流”；
④德国人说：“我会说我们这四个国家的语言。”
那么，按照房号从小往大排，房间里住的人的国籍依次是( )。
A. 英国 德国 韩国 法国
B. 法国 英国 德国 韩国
C. 德国 英国 法国 韩国
D. 德国 英国 韩国 法国
[单项选择]患者，女，26岁。有十二指肠球部溃疡5年，突感中上腹部剧烈疼痛6小时，继之满腹疼痛，大汗淋漓，体检：全腹有压痛，肌紧张及反跳痛，考虑有溃疡病穿孔可能应紧急做下列哪一种检查（）
A. 胃镜
B. 上消化道钡餐检查
C. 腹部B超
D. 立位腹平片
E. 腹腔穿刺
[判断题]检修动力电源箱的支路开关都应加装剩余电流动作保护器（漏电保护器）并应定期检查和试验
A.正确
B.错误
[判断题]㠋/BL型动车组HMI左屏故障复位=42-F01，右屏故障复位=42-F02，禁止单个显示屏故障时，可以将两个空开同时复位。
A.正确
B.错误
[多选题]变电站现场运行专用规程应明确防误闭锁装置的（____）、（____）及（____），建立台账并定期检查。
A.配置
B.操作程序
C.故障处理方法
D.原理
[单项选择]用“商住两用房”名义申请商用房贷款的，贷款额度不超过（）。
A. 40%
B. 50%
C. 55%
D. 60%
[判断题]触电急救，首先要使触电者迅速脱离电源，越快越好。因为电压作用的时间越长，伤害越重
A.正确
B.错误
[判断题]不得使用金属材料直接捆扎和吊运聚乙烯管道。
A.正确
B.错误
[判断题][T]B-B-A-002 4 1 2
接入网主要完成用户到业务节点之间信息的交叉连接、复用和传输功能。
A.正确
B.错误
[单选题]作为导体的金具，应在电气接触表面上涂以( )。
A.黄甘油
B.防锈漆
C.电力脂
D.润滑脂
[单项选择]组合逻辑电路中的竞争冒险现象是由于（）引起的。
A. 电路未达到最简化
B. 电路有多个输出
C. 电路中的时延不同
D. 逻辑门类型不同
[单项选择]Shopping habits in the United States have changed greatly in the last quarter of the 20th century. Early in the 1900s most American towns and cities had a Main Street. Main Street was always in the heart of a town. This street was (31) on both sides with many various businesses. Here, shoppers walked into stores to look at all sorts of merchandise: clothing, furniture, hardware, groceries. (32) , some shops offered (33) . These shops included drugstores, restaurants, shoe-repair stores, and barber or hairdressing shops. (34) in the 1950s, a change began to (35) . Too many automobiles had crowded into Main Street (36) too few parking places were available to shoppers. Because the streets were crowded, merchants began to look with interest at the open spaces (37) the city limits. Open space is what their car-driving customers needed. And open space is what they got when the first shopping centre was built. Shopping centres, or rather mal
A. suddenly
B. Abruptly
C. Contrarily
D. But
[判断题]挂有列尾装置的旅客列车,始发前、摘挂作业开车前及在途中换挂机车站、客列检作业站的简略试验,有列检作业的由列检人员负责,无列检作业的由车辆乘务员负责。
A.正确
B.错误
[判断题]DF4B型客运机车运行速度为120km／h。
A.正确
B.错误
[简答题]综采维修钳工在瓦斯积聚地点作业中应注意什么？
[单项选择]下列哪项不是精神自动综合征的临床表现
A. 假性幻觉
B. 被控制感
C. 强制性思维
D. 意识障碍
E. 影响妄想
[单项选择]For many years, any discussion of reparations to compensate the descendants of African slaves for 246 years of bondage and another century of legalized discrimination was dismissed. Many whites and blacks alike scoffed at the idea, reasoning that slavery is part of the past that would only unleash new demons if it were resurrected.
Opponents contend that the fledgling reparations movement overlooks many important facts. First, they assert, reparations usually are paid to direct victims, as was the case when the U. S. government apologized and paid compensation to Japanese-Americans interned during World War II. Similarly, Holocaust (;k2,V~-~,) survivors have received payments from the Germans. In addition, not all blacks were slaves, and an estimated 3,000 were slave owners.
Also, many immigrants not only came to the United States after slavery ended, but they also faced discrimination. Should they pay reparations, too Or should they receive them
And regardless of how
A. given slave owners financial losses
B. sold slaves and captured runaways
C. operated insurance and advertisement businesses
D. depended on slavery for their existence
[多选题] 车辆热轴处理的补充规定，按照（）的原则，微热由THDS 自动跟踪。
A.微热跟踪
B.微热终点站停车
C.强热前方车站停车
D.激热立即停车
[单选题]健全隐患排查治理体系要构建以( )为主体的隐患排查治理机制。
A.政府
B.安监部门
C.生产经营单位
D.行业管理部门
