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[单选题]连接电动机械及电动工具的电气回路应单独设开关或插座,并装设剩余电流动作保护装置,金属外壳应接地电动工具应做到()。
A.一机一保护
B.一机一闸一保护
C.一闸一保护
D.一机二闸保护

热门试题:

[简答题]简述人力资源管理的目标。
[多项选择]下列关于“非流动资产基金”的表述正确的有()。
A. 明细科目:长期投资、固定资产、无形资产、在建工程
B. 取得非流动资产或发生相关支出时予以确认
C. 计提折旧/摊销时予以冲减
D. 处置资产时予以冲销
[判断题]《山东省农村商业银行贷款借新还旧管理暂行办法》中规定,贷款借新还旧仅限于偿还原贷款本金,严禁以贷收息。( )
A.正确
B.错误
[单选题]工业中常用的铸铁含碳质量分数一般在()。
A.1.5%-2.5%
B.2.5%-4.0%
C.4.0%-5.0%
[判断题]交收系统在T日对T+0进行预交收。( )
[单项选择]某施工企业拟对外投资,但希望从现在开始的5年内每年年末等额回收本金和利息200万元,若按年复利计息,年利率8%,则企业现在应投资()万元。[已知:(P/F,8%,5)=0.6806;(P/A,8%,5)=3.9927;(F/A,8%,5)=5.8666]
A. 680.60
B. 798.54
C. 1080.00
D. 1173.32
[单选题]( )禁止通过设有车辆减速器(顶)的驼峰。
A.涂有禁止上驼峰标记的车辆
B.21和22型客车
C.凹型车
D.D17、D19g型以外落下孔车
[多项选择]1982年5月,我国决定对农业部下设土地管理局,开始在不同类型的县开展______工作。
A. 土地调查
B. 土地清查
C. 土地登记
D. 土地统计工作试点
E. 地权登记发证
[判断题]智能配变终端SYS灯状态为绿色快闪,表示设备正常运行。( )
A.正确
B.错误
[单选题]在计算机工作过程中,将外存的信息传送到内存中的过程称之为( )
A.写盘
B.拷贝
C.读盘
D.输出
[单项选择]某港口建于水下的重力式码头为条形基础,基底有抛石基床,其厚度d1=2.0m,抛石基床底面处的有效受压宽度B'e=12m,合力倾斜率为tanδ'=0.203(δ'=11.5°);抛石基床底面下受力层范围内土的抗剪强度指标标准值φk=24°,ck=15kPa,天然重度标准值γk=18.5kN/m3;抛石基床范围内土的天然重度标准值γk1=19kN/m3,作用于抛石基床上竖向合力设计值V'd=1760kN,此时抗力分项系数YK为()。(承载力系数NγB=3.3,NqB=6)
A. 2.32
B. 2.81
C. 2.95
D. 3.03
[单选题]道岔在正常转换时,保证液压系统有足够的压力;道岔尖轨因故不能转换到位时,()应溢流。()
A.节流阀
B.单向阀
C.安全阀
D.溢流阀
[单项选择]患者男性,56岁,以反复高热2个月入院,诊断为膈下脓肿。近月一直禁食,入院后拟急诊剖腹探查。该病人在麻醉中不宜使用的药物是()。
A. 咪达唑仑
B. 芬太尼
C. 琥珀胆碱
D. 依托咪酯
E. 羟丁酸钠
[单选题]注入肾静脉的是
A.左睾丸静脉
B.脾静脉
C.肝静脉
D.下腔静脉
E.上腔静脉
[简答题]凝土用石有什么质量要求?
[判断题]空气呼吸器是一种与外界隔绝的自救式再生器。
A.正确
B.错误
[单项选择]骨盆骨折最为重要的体征是()
A. 局部肿痛
B. 局部压痛及间接挤压痛
C. 反常活动
D. 畸形改变
E. 骨擦音及骨擦感
[填空题]Queens


[单项选择]喉切开或穿刺的部位是()
A. 甲状软骨
B. 甲状舌骨膜
C. 声韧带
D. 环甲正中韧带
E. 环状软骨
[单项选择]

In 1998 consumers could purchase virtually anything over the Internet. Books, compact discs, and even stocks were available from World Wide Web Sites that seemed to spring up almost daily. A few years earlier, some people had predicted that consumers accustomed to shopping in stores would be reluctant to buy things that they could not see or touch in person. For a growing number of time-starved consumers, however, shopping from their home computer was proving to be a convenient alternative to driving to the store.
A research estimated that in 1998 US consumers would purchase $ 7.3 billion of goods over the Internet, double the 1997 total. Finding a bargain was getting easier, owing to the rise of online auctions and Web sites that did comparison shopping on the Internet for the best deal.
For all the consumer interest, retailing in cyberspace was still a largely unprofitable business, however. Internet pioneer Amazon. com, which began selling books in 1995 and lat
A. Consumers are reluctant to buy things on the Internet
B. Consumers are too busy to buy things on the Internet
C. More and more consumers prefer Internet shopping
D. Internet retailing is a profitable business

[单选题]关于CT值的描述,哪项是错误的
A.CT值说明组织结构的密度高低
B.CT值没有单位
C.CT值具有量的概念
D.CT值由吸收系数换算而来
E.对比平扫和增强扫描的CT值,可了解强化程度
[判断题]司机控制器在换向手柄上有 3 个档位。
A.正确
B.错误
[单项选择]一颊部穿通伤患者,前来急诊
对此类创伤的处理原则
A. 抗感染
B. 止血
C. 减少畸形,恢复面形
D. 关闭创口,消灭创面
E. 以上几点都不对
[单选题]下列情形,不应当确定为火灾隐患的是:( )。
A.未建立消防档案、确定消防安全重点部位
B.消防设施未保持完好有效,影响防火灭火功能的
C.擅自改变防火分区,容易导致火势蔓延、扩大的
D.在人员密集场所违反消防安全规定,使用、储存易燃易爆危险品,不能立即改正的
[单选题]下列有关行政许可、行政确认和行政审批的各项表述中,不符合法律规定的是(  )。
A.行政许可只能依申请进行,行政确认和行政审批既可依申请进行,也可依职权进行
B.行政许可和行政审批都是一种外部管理行为
C.持枪许可属于行政许可而非行政审批
D.在行政诉讼中,行政许可会因为申请行为无效而导致无效或者被撤销,行政确认行为通常不因申请行为无效而无效或者被撤销
[判断题] 旅行证属于护照代用证件( )
A.正确
B.错误
[单项选择]
{{B}}TEXT B{{/B}}

One of the mysteries of nature is animal communication. Creatures of the sea move through their liquid element without any hearable sound. Yet they are able to sense the silent passing or attack of others of their kind. This is because bodies moving in water create a pressure wave, something like a gust of wind produced by a passing automobile. A narrow sensor system running along each side of the shark, from eye to tail, receives and interprets these pressure waves. I have seen sharks appear swiftly, obviously drawn by the motion of a diver’s hands, which had sent out strong waves.
One might think it impossible to distinguish odors in water. Yet sharks, surprisingly, are able to follow a scent across miles of ocean and arrive at its exact source. A diver who spears a fish and attaches its bloody body to his belt, and then goes on with the hunt, becomes a natural prey to the shark. I have seen sharks follow a
A. they can follow a scent just like clogs
B. they can move swiftly under the sea
C. they are hostile to divers
D. they have very strong basic instincts
[简答题]接触网设备统计单位包括运营里程、正线公里、 接触网延展公里、接触网换算公里。它们分别是?
[填空题]()是指贷款发放或其他信贷业务发生后至本息收回或信用结束全过程管理行为的总和。(1分)
[简答题]上下级渠道衔接时有哪两种处理方法?
[单项选择]对下列各句使用的修辞方法判断正确的一项是()。
①密密的塔松像无数撑天的巨伞。
②虽然天山这时并不是春天,但是有哪一个春天的花园能比得过这繁花无边的天山呢。
③它们吃了含有乳汁的酥油草,膘肥体壮,毛色格外发亮,好像每一根毛尖都冒着油星。
④每当一片乌云飞来了,云脚总是扫着草原。
A. 比喻;排比;比喻;拟人
B. 比喻;反问;比喻;拟人
C. 比喻;反问;夸张;拟人
D. 比喻;对比;夸张;拟人
[单选题]大型养路机械每日作业后应进行日常检查保养,保养时间应不少于()。
A.1h
B.1.5h
C.2h
D.2.5h
[填空题]
The development of writing was one of the great human inventions. It is difficult (51) many people to imagine language without writing; the spoken word seems intricately tied to the written (52) .
But children speak (53) they learn to write. And millions of people in the world speak languages with (54) written form. Among these people oral literature abounds, and crucial knowledge (55) memorized and passed (56) generations. But human memory is short-lived, and the brain’s storage capacity is finite. (57) overcame such problems and allowed communication across the miles (58) through the years and centuries. Writing permits a society (59) permanently record its poetry, its history and its technology.
It might be argued (60) today we have electronic means of recording sound and (61) to produce films and television, and thus writing is becoming obsolete. (62)
[名词解释]生理性黄疸
[单选题]依据《中国南方电网有限责任公司电力安全工作规程》(Q/CSSG 510001-2015)第15.3.1 条规定:电力电缆试验要拆除接地线时,应征得工作许可人的许可(根据调度员命令装设的接地线,应征得调度员的许可),方可进行。工作完毕后( )。
A.稍后恢复
B.立即恢复
C.许可后恢复
D.不需恢复
[单项选择]LTE系统中产生前缀序列的逻辑根序列个数为()。
A. 800
B. 838
C. 830
D. 850
[判断题]直流电源模块液晶显示窗不能显示输出电流。( )
A.正确
B.错误
[多选题]设备调试时,应( )。
A.配电柜送电前,检查柜内接线正确,各分支开关处于分闸状态, 送电后测量电压正常,零线和接地线无电压。
B.单机测试前,检查设备处于完好状态,运转的设备运转部分周围 没有妨碍物。设备启动后可立即上前检查。
C.单机测试时,设备急停按钮或者配电柜前必须配备应急操作人员, 一旦发现设备故障或其他不安全现象,应立即停止设备或电源。
D.无生产负荷的联合试运转及调试,应在设备单机试运转合格后进 行。空调、供热水系统、监测与控制系统以及供能系统等应满足调试使用要求。

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