热门试题:
[单项选择]新技术迅速完善和标准化是技术生命周期的()。
A. 创新阶段
B. 成长阶段
C. 成熟阶段
D. 衰退阶段
[单选题]阿伦和梅耶所进行的综合研究提出的承诺不包括( )。
A.感情承诺
B.继续承诺
C.规范承诺
D.口头承诺
[多选题]变压器的绝缘试验包括:( )。
A.外施耐压试验
B.感应耐压试验
C.冲击耐压试验
D.局部放电试验
[判断题]当流体在管内流动时,紧贴管壁处流体质点所受摩擦力最大,流速为零,位于管中心轴线上的质点,受管壁摩擦力影响最大,因而流速最小。
A.正确
B.错误
[判断题]煎药容器以砂锅、搪瓷器皿为好,忌用铁器,以免发生物理反应。
营养科
A.正确
B.错误
[单选题]规章规定,在连续( )小时内,在模拟机上实施飞行考试或检查不得超过4人次。
A.12
B.16
C.20
D.24
[判断题]对于UPS不得连接如如日光灯之类的负载。
[单选题]用滚动法装卸安装建筑设备时,滚杠的粗细应一致,长度应比托排宽度长()mm以 上,严禁带手套填塞滚杠。
A.500
B.200
C.300
D.400
[判断题]4.189. 第189题
分布式电源用户不能做全减另发进行退补。
A.正确
B.错误
[判断题]全站仅有一组蓄电池时,运行四年后每年应进行全核对性放电
A.正确
B.错误
[单选题]以下选项中,符合呼吸性酸中毒特点的是
A.NaHCO3/H2CO3< 20/1,原发性H2CO3↑
B.NaHCO3/H2CO3<20/1,原发性NaH-CO3↓
C.NaHCO3/H2CO3> 20/1,原发性H2CO3↑
D.NaHCO3/H2CO3> 20/1,原发性NaHCO3↓
E.pH一定降低
[单选题]以下不属于网络安全控制技术的是( )。
A.防火墙技术
B.访问控制技术
C.入侵检测技术
D.差错控制技术
[单选题] 既无列尾装置(包括列尾装置故障)、又无列检作业的货物列车在车站始发或在车站临时停车站停时间超过()min时,发车前,外勤助理值班员需进行简略试验。
A.15
B.20
C.25
D.30
[判断题]雨天在户外操作电气设备时,操作杆的绝缘部分应有防雨罩或使用带绝缘子的操作杆。
A.正确
B.错误
[简答题]在下山迎头打眼作业,要时时注意防止发生跑车、透水事故
[判断题]1945年8月上旬,苏联向日本投掷了原子弹并出兵中国东北,中国战局发生了重大变化。()
[单项选择]Text
In Britain, winter is the season not only for visits to the theatre, opera, concerts and ballet, but also for shopping or for sightseeing.
London, one of the (26) cities in the world, has plenty to offer during the winter months, (27) in the way of entertainment—and the (28) act like a magnet with (29) array of presents for the Christmas (30) , followed by large scale bargains in the January (31) . But it’s not only London that (32) value shopping—most of our suburban and (33) centres have just as much to offer to the (34) shopper.
Even if you’re based (35) London, you don’t have to spend all your (36) there—and that goes for all the year (37) , too. Take a train or coach and (38) what else Britain has to offer; (39) are many excursions, even in winter, and among the great country houses (40) keep their stately front d
A. in
B. at
C. outside
D. on
[单项选择]Impressionism began with a small group of artists who wanted to ______ .
A. use light colors
B. fight the government
C. become scientists
D. show their paintings
[单选题]如果出现了NSA接入失败,以下哪类问题可以通过性能指标做统计,并且可以统计相应的失败原因?
A.A.eNodeB不发起gNodeB添加
B.B.gNodeB拒绝添加请求
C.C.UE无MR上报
D.D.UE在eNodeB侧随机接入失败
[单项选择]患者陈某,男性,72岁。大便不干硬,虽有便意,临厕努挣无力,挣则汗出短气,便后疲乏,面色㿠白,舌淡嫩苔薄,脉虚。其治法是()
A. 补脾和胃
B. 温阳通便
C. 益气补肺
D. 温中健脾
E. 益气润肠
[单选题]提高聚合反应温度既会提高( )反应速率,也会增大调节剂的扩散速率。
A.化学
B.助剂
C. 分子
D.链转移
[单选题]本年度的全年定期、通勤、定期就医乘车证,可延期使用到( )止。
A.次年的1月31日
B.次年的2月底
C.次年的1月15日
D.次年的1月10日
[单选题]卫生部1978年颁布的《综合医院组织编 制原则试行草案》规定,500张床位以上的医院中,病床与工作人员之比是()
A. 1 : (1.6〜1.7)
B. 1 : (1.4〜1.5)
C. 1 : (1. 3 〜1. 4)
D. 1 : (1.2〜1.3)
E. 1 : (1.1 〜1.2)
[单项选择]
Washington Irving was the American first man of letters to be known internationally. His works were received enthusiastically both in England and in the United States. He was, in fact, one of the most successful writers of his time in either country, delighting a large general public and at the same time winning the admiration of fellow writers like Scott in Britain and Poe and Tarwthorne in the United States. The respect in which he was held was partly owing to the man himself, with his warm friendliness, his good sense, his politeness, his gay spirits, his artistic integrity, his love of both the old World and the New. Thackeray described Irving as a "gentleman, who, though himself born in no very high sphere, was most finished, polished, witty; socially the equal of the most refined Europeans". In England he was granted an honorary degree from Oxford -- an unusual honor for a citizen of a young, uncultured nation -- and received the medal of the Royal Society of Lite
A. Because Oxford was a famous university iii the world.
B. Because he was from America which was a country with young history and less culture.
C. Because the degree was not easy to get.
D. Because he was not so famous as his fellow writers.
[单项选择]离心泵启动的正确步骤为()。
A. 开入口阀-启动电机-开出口阀
B. 启动电机-开入口阀-开出口阀
C. 开入口阀-开出口阀-启动电机
D. 开出口阀-开入口阀-启动电机
[单选题]滑动轴承顶部的螺纹孔是安装( )用的。
A.吊钩
B.紧定螺钩
C.油环
D.定位
[单选题]施工线路与被跨越物垂直交叉时,跨越架的宽度应比施工线路两边线各宽出()m。
A.1.5;
B.2;
C.2.5;
D.1。
[判断题]个体工商户陈某欠税,其私家车不在税收强制执行措施的范围之内。
[单选题]动车组再生制动时,参与的设备包括()、主变压器、牵引变流器和牵引电机。
A.辅助变流器
B.充电机
C.受电弓
D.蓄电池
[多选题]在带电的电压互感器二次回路上工作时,应采取以下哪些安全措施( )?
A.严格防止短路或接地
B.必要时,工作前申请停用有关保护装置、安全自动装置和自动化系统
C.接临时负载,应装有专用的刀闸和熔断器
D.工作时禁止将回路的安全接地点断开
[单项选择]能阻止油气继续运移,并能使油气聚集起来,形成油气藏的地质场所称为()。
A. 断层
B. 储集层
C. 盖层
D. 圈闭
[多选题]参保人员参加企业职工基本养老保险的,达到法定退休年龄时,缴费不满15年延长缴费,以下说法正确的是( )。
A.基本养老保险关系最后参保地是户籍地的,在户籍地办理延长缴费
B.基本养老保险关系最后参保地是非户籍地,且在最后参保地缴费满10年的,在最后参保地延长缴费
C.基本养老保险关系最后参保地是非户籍地,且在最后参保地缴费不满10年,在上一个缴费满10年的基本养老保险关系所在地延长缴费
D.基本养老保险关系在所有参保地均缴费不满10年,在户籍地延长缴费
[单选题]《特种设备安全监察条例》规定,场(厂)内专用车辆的使用单位应当建立场(厂)内专用车辆的()。
A.安全档案
B.技术档案
C.行驶记录档案
D.安全技术档案