题目详情
当前位置:首页 > 职业培训考试
题目详情:

[单选题]通用知识:把晶闸管的阳极正电压减小到一定程度,使晶闸管通过的电流()它的维持电流,晶闸管自然关断。
A.截止
B.等于
C.大于
D.小于

热门试题:

[多项选择]下列经文出自《素问·生气通天论》的有()
A. "生之本,本于阴阳"
B. "阴平阳秘,精神乃治"
C. "阴阳者,天地之道也"
D. "凡阴阳之要,阳密乃固"
E. "阴者,藏精而起亟也;阳者,卫外而为固也"
[单选题]了解职业分类首先要知道三个产业划分,即第一、第二和第三产业。其中第三产业是( )。
A.生产制造业
B.建筑业
C.流通和服务业
D.绿色农业
[填空题]大甑子下插沙甑容为( )。
[单项选择]"元气"又称()
A. 正气
B. 营气
C. 卫气
D. 真气
E. 宗气
[判断题]红外测温发现组合电器罐体温度发热部分和正常相温差不超过10K,应对该部位增加测温次数,进行缺陷跟踪。
A.正确
B.错误
[单选题]在夏天,为了使控制系统超负荷长期使用,不应打开控制柜的( )散热。
A.电源
B.柜门
C.风扇
D.通风系统
[单项选择]在热带地区存在次天气尺度(或中间尺度)涡旋,其水平尺度是()
A. 100--300km
B. 1000--1500km
C. 200km左右
D. 300--1000km
[单项选择]The housewives are worthy of praise as their work is _________ .


A. ambitious
B. rigorous
C. tedious
D. courageous
[多项选择]地表下沉量测内容包括( )。
A. 地表下沉范围
B. 地表下沉量值
C. 地表及地中下沉随工作面推进的规律
D. 地表及地中下沉稳定的时间
E. 地表及地中下沉的时间
[单选题]在电机和变压器等有铁心线圈的设备中,通入交流电时,在铁心中会产生( )。
A. 自感
B. 涡流
C. 互感
D. 电火花
[判断题]验电是保证电气作业安全的技术措施之一。
A.正确
B.错误
[判断题]经济基础是现实存在的一切生产关系的总和。
A.正确
B.错误
[单项选择] Eskimo villages today are larger and more complex than the traditional nomadic (游牧的) groups of Eskimo kinsmen. Village decision-making is organized through community councils and co-operative boards of directors, institutions which the Eskimos were encouraged by the government to adopt. They have been more readily accepted in villages like Fort Chimo where there is individualistic wage ethos and where ties of kinship are less important than in the rural village such as Port Burwell, where communal sharing between kinsmen is more emphasized. Greater contact with southern Canadians and better educational facilities have shown Fort Chi- mo Eskimos that it is possible to argue and negotiate with the government rather than to acquiesce passively in its policies. The old-age paternalism of southern Canadians over the Eskimos has died more slowly in the rural villages where Eskimos have been more reluctant to voice their opinions aggressively. This has been a frustration to government
A. people in general are better educated
B. they are already accustomed to co-operating
C. there is already communal ownership of goods
D. they are more accustomed to working independently for a living
[单选题]携带型接地线是将欲检修的设备或线路作临时性的()的一种安全用具,所以,也称之为临时接地线。
A.接零保护
B.短路接地
C.接地保护
[单选题]通信故障分为四类:( )。
A.通信事故、重大故障、严重故障、一般故障
B.严重事故、重大故障、严重故障、一般故障
C.严重事故、通信故障、严重故障、一般故障
D.严重事故、通信事故、重大故障、一般故障
[单项选择]产业结构政策的核心内容是()。
A. 产业发展的重点顺序选择问题
B. 协调竞争与规模经济的关系
C. 引导和干预产业技术进步
D. 产业在地域和空间上的分布与组合
[判断题] 二相半控桥式整流电路由3只晶闸管和3只功率二极管组成。
A.正确
B.错误
[判断题]任何通货膨胀都一定会对人们的收入和财富的再分配产生影响。()
A.正确
B.错误
[单项选择]凡有法律、法规规定的( )、应税财产或应税行为的各类纳税人,均应当按照《税收征收管理法》及其实施细则和国家税务总局印发的《税务登记管理办法》规定办理税务登记。
A. 收入
B. 现金收入
C. 劳务收入
D. 应税收入
[简答题]以下属于禁售商品的是
[判断题]货车使用“特殊前行”模式,须经列车调度员口头同意。对于编组、区段站到达场终到的货物列车停车后,因技术作业对风道等需前移时,根据车站调车前移通知,比照“特殊前行”执行。
A.正确
B.错误
[不定项选择题]女,28岁。既往月经规律,现停经45天,发现阴道流出少量咖啡色物2天,无腹痛,尿hCG(+)。 最需要鉴别的疾病是(  )。
A.子宫内膜癌
B.异位妊娠
C.子宫颈癌
D.子宫肌瘤
E.功能失调性子宫出血
[简答题]简述PLC控制与继电器控制的区别。
[单选题]卸下的货物要件数清楚,码放稳妥,便于清点,发现破损件应交由()处理。
A.货运员
B.托运人
C.班组长
D.安全员
[单选题]朱某向行政机关提出行政许可申请,行政机关除可以当场作出行政许可决定的外,一般应当自受理行政许可申请之日起( )内作出行政许可决定。
A.5日
B.10日
C.20日
D.30日
[多选题]在()情况下,劳动者应当被认定为工伤。
A.患职业病
B.受到机动车事故伤害
C.外出期间受到某种伤害
D.在工作时间和工作场所内,因工作原因受到事故伤害
E.在工作时间和工作场所内,因履行工作职责受到暴力伤害
[单选题]烧伤休克患者观察液量是否补足,简易而重要的指标是:
A.脉率
B.末梢循坏
C.尿量
D.血压
E.神志
[单项选择]Which protocol and port have been assigned by IANA for RADIUS authentication?()
A. UDP/1812
B. UDP/1813
C. TCP/1812
D. TCP/1813
[单选题]碳素钢按照用途可以分为结构钢.特殊性能钢和( )(中)
A.结构钢
B.合金钢
C.高碳钢
D.工具钢
[单选题]电缆沟道应有通风、防水及()措施
A.防电
B.防火
C.防爆
D.防抖
[单选题]触电急救,胸外心脏按压频率应保持在( ) 次/min,
A.60
B.80
C.100
D.120
[判断题]组塔过程中,在杆塔上有人时,可以适当调整临时拉线来校正杆塔倾斜或弯曲。(  )
A.正确
B.错误
[单选题]钳形电流表使用完后,应将量程开关挡位放在( )。
A.最高挡
B.最低挡
C.中间挡
D.任意挡
[单项选择] 第二篇 The Worker’s Role in Management   Traditionally, it has been the worker’s role to work and management’s role to manage. Managers have planned and directed the firm’s operations with little thought of consulting the labor force. Managers have rarely felt compelled(被迫的) to obtain the worker’s opinions or to explain their decisions to their employees. At most, companies have provided "suggestion boxes" in which workers could place ideas for improving procedures. In recent years, however, many management specialists have been arguing that workers are more than sellers of labor——they have a vital stake in the company and may be able to make significant contributions to its management. Furthermore, major company decisions profoundly affect workers and their dependents. This is particularly true of plant closings, which may put thousands on the unemployment lines. Should workers, then, play a stronger role in management   Workers should have a role in management
A. are no longer sellers of the products
B. are less affected by company decisions than before.
C. are able to make final decisions for the company.
D. should have a say in management of the company.
[单项选择]哮喘发作间歇期宜选用()
A. 持续吸入维持量皮质激素6个月~2年
B. 早期,较大剂量静滴琥珀酸氢化可的松
C. 吸入β-肾上腺素能受体激动剂+肾上腺皮质激素类
D. 口服肾上腺皮质激素
E. 口服β-肾上腺素能受体激动剂
[单选题]216.(94097)自喷采油时,井筒中的原油在向上运动的过程中,井筒压力(     )。(1.0分)
A.A、不断升高
B.B、不断降低
C.C、保持不变
D.D、经常波动

我来回答:

购买搜题卡查看答案
[会员特权] 开通VIP, 查看 全部题目答案
[会员特权] 享免全部广告特权
推荐91天
¥36.8
¥80元
31天
¥20.8
¥40元
365天
¥88.8
¥188元
请选择支付方式
  • 微信支付
  • 支付宝支付
点击支付即表示同意并接受了《购买须知》
立即支付 系统将自动为您注册账号
请使用微信扫码支付

订单号:

截图扫码使用小程序[完全免费查看答案]
请不要关闭本页面,支付完成后请点击【支付完成】按钮
恭喜您,购买搜题卡成功
重要提示:请拍照或截图保存账号密码!
我要搜题网官网:https://www.woyaosouti.com
我已记住账号密码