热门试题:
[单选题](单选题)色彩深度是指在一个图象中什么的数量:( )
A.颜色
B.饱和度
C.亮度
D.灰度
[填空题]如果系统中的所有作业是同时到达的，则使作业平均周转时间最短的作业调度是______。
[简答题]某企业2019年未安排残疾人就业,用人单位在职职工年平均工资为3万元,在职职工年平均人数为50人。请问:(1)该企业2020年应缴纳残疾人就业保障金吗(不考虑各项优惠政策)?(2)该企业应缴纳的残疾人就业保障金是多少(假设当地规定安排残疾人就业比例为不低于本单位在职职工总数1.5%)?
[多项选择]粗氢气与（）换热，使用冷流调节甲烷化反应气体的入口温度
A. 工业氢
B. 中变气
C. 转化气
D. 低变气
[填空题]带电线路跨越架需停电搭设、封顶或拆除时,必须按停电作业的规定指派专人办理停电手续,工作点两端应做好( )。
[单项选择]
Most IP layer-based proxy mechanisms, such as network address translation (NAT), only support uni-directional proxy, from the internal network to external network (the Internet). The proxy establishes the communication channel by (86) IP addresses. The IP addresses must be (87) . These proxy mechanisms prevent applications that must establish return data channels from establishing their data channels, such as, multimedia applications. IP layer-based proxy mechanisms need additional software (88) for each application that uses (89) channels. SOCKS identifies communication targets through domain names, overcoming the restriction of using private IP addresses. SOCKS can use domain names to establish communication between separate LANs, with (90) IP addresses.
（86）是（）
A. manufacturing
B. manipulating
C. conduct
D. implement
[单选题]一级化学防护服的防护靴击穿电压为( )V。
A.220
B.380
C.≥1100
D.≥5000
[单选题]根据我国现行规定，一般大中型项目的建设内容不包括( )。
A.根据可行性研究报告编制设计文件
B.初步设计经批准后，做好施工前的各项准备工作
C.组织施工，并根据工程进度，作好生产准备
D.根据项目的咨询评估情况，对经济效益进行估算
[判断题]根据《网络安全法》的规定，有关部门可以对举报人的相关信息予以保密，保护举报人的合法权益。
A.正确
B.错误
[判断题]35kV及以上电压等级厂站光缆覆盖率应达到100%。（ ）
A.正确
B.错误
[多选题]通过( )等线上线下渠道，向社会广泛公开电费电价、收费项目及标准、服务规范、验收标准等公示类信息，及时更新公开信息和资料。
A.营业厅
B.“网上国网”APP
C.95598网站
[单项选择]某女27岁，|7龋坏，治疗后取模做冠修复在代型上涂布间隙隙料厚度应控制在（）。
A. 10～30μm
B. 35～40μm
C. 45～50μm
D. 55～60μm
E. 65～70μm
[判断题]N型半导体中，自由电子是多数载流子，空穴是少数载流子。
[多选题]营销现场作业，（）认为有必要现场勘察的，应根据工作任务组织现场勘察，并填写现场勘察记录。
A.工作票签发人
B.工作许可人
C.工作负责人
D.专责监护人
[单选题]报装档案资料应重点核实有关签章是否真实、齐全，资料填写是否（ ）、清晰。
A.规范
B.整洁
C.真实
D.完整
[单选题]公文的种类主要包括党的公文.行政公文和( )。
A.团体公文
B.指示公文
C.企业公文
D.公司公文
[多选题]下列关于钢管临边防护栏杆的规定，哪些是正确的?( )
A.钢管横杆采用φ48×(2.75-3.5)mm的管材
B.采用电焊固定
C.栏杆柱采用φ48×(2.75-3.5)mm的管材
D.采用镀锌钢丝绑扎固定
E.采用扣件固定
[多选题]开关柜手车推入或拉出操作卡涩，如何检查？(____)
A.检查操作步骤是否正确
B.检查手车是否歪斜
C.检查操作轨道有无变形、异物
D.检查电气闭锁或机械闭锁有无异常
[判断题]使用队徽及其图案,应当严肃、庄重,可以放大或者缩小。悬挂队徽,应当置于显著位置。不得使用破损、污损、褪色或者不合规格、颜色的队徽。( )
A.正确
B.错误
[单项选择]国家对新药生产实行（）
A. 特殊管理制度
B. 品种保护制度
C. 分类管理制度
D. 批准文号管理制度
E. 药品保管制度
[单选题]班主任教育的对象和依靠的教育力量是（）。
A.班干部
B.班级集体
C.班级好学生
D.良好的班风
[不定项选择题]共用题干
The Most Wonderful Islands
The Palm Islands are the largest artificial islands in the world and are under construction in Dubai,in the United Arab Emirates.They are being developed as tourist,leisure,and residential resorts,and will increase the coastline of the country by 120 kilometres.
After four years of planning and careful consideration of the environmental issues,construction started in 2001.Dutch engineers with experience of reclaiming land from the sea were employed in the building of the first two islands.The site for all three islands is an area of the sea where the water is not very deep.Sand is taken from the seabed and sprayed into the construction site.Although the shallow water facilitates this process,the islands are still very exposed to the currents and tidal movements of the sea.Rocks are used to hold the sand in place resulting in a large crescent（月状的）structure.This acts as a breakwater and protects the islands from the sea.
The first two islands are in the shape of date palm trees and consist of a trunk and 17 fronds,or leaves, coming off the trunk.The first island,named Palm Jumeirah,has three five-star hotels in the trunk,and luxury homes in the leaves.It is astonishing that when these homes went on sale in 2004,they were all sold within three days.
The second palm,Jebel Ali,was started in 2002 and is designed to be an entertainment centre.Six marinas（小游艇船坞）are planned , with a water theme park , and homes built on stilts（桩柱） in the water.
The Palm Deira is planned to be the largest of the three islands,with a length of 14km and a width of 8.5km,an area larger than the city of Paris.It will consist of residential properties,marinas,shopping malls,sports facilities,and clubs.These will be open to both residents and tourists.
More artificial islands,the World Islands,are now being constructed near the Palm Jumeirah.They consist of 300 private islands grouped into the shape of the continents of the world and will be used for estates,private homes,community islands,and resorts.
Unquestionably,these artificial islands are one of the wonders of the modern world.They will also maintain Dubai's status as one of the leading tourist destinations in the region.
The Palm Deira will be the same size as Paris.
A.Right
B.Wrong
C.Not mentioned
[单选题]弗洛伊德认为,梦是_ _活动的表现 ( )
A.潜意识
B.意识
C.前意识。
D.错误意识
[多选题]手持电动工器具如有（ ）或有损于安全的机械损伤等故障时，应立即进行修理，在未修复前，不得继续使用。
A.绝缘损坏、电源线护套破裂
B.电源线护套油污
C.保护线脱落
D.插头插座裂开
[判断题]《铁路客车运用维修规程》规定,灭火器应由专业维修企业按照国家有关规定进行维修,张贴维修标志,并在灭火器筒体上涂打维修时间。
A.正确
B.错误
[判断题]加油员每日出车前必须要对加油车上的随车工具进行检查,确保工具齐全、良好。
A.正确
B.错误
[单项选择]在临床血液生化检查指标中，LDL-Ch表示
A. 血清总胆固醇
B. 血清三酰甘油酯
C. 低密度脂蛋白胆固醇
D. 高密度脂蛋白胆固醇
E. 极低密度脂蛋白胆固醇
[单选题]发生人身触电时，（ ），再立即断开有关设备的电源。
A.报告主管领导
B.保护现场
C.可不经许可
D.报告调度
[单选题]隔离栏可用圆钢制作,其间隔不得大于( )mm。
A.300
B.200
C.100
[单选题]使用直流高压发生器升压至所需电压或电流,升压速度以每秒()试验电压为宜。
A. 1-3kV
B. 3-5kV
C. 2-5kV
D. 1-5kV
[判断题]采用去离子水可以防止汽缸套的穴蚀。( )
A.正确
B.错误
[单选题]音频电缆芯线必须经过（ ）方能接入设备。［《国家电网公司输变电工程标准工艺（三） 工艺标准库（2016年版）》，工艺编号：0102070102］
A.过电流、过电压保护装置
B.试验端子
C.光电转换端子
D.接地装置
[填空题] Steven Weinberg is that kind of person who not only would like to help others, but really enjoying doing so. That is 【B1】 he joined forces with his wife, Mary, and a cancer survivor Paul Young to found Hospitality for Family and Friends, Inc. The 【B2】 group helps find unsold hotel rooms for families and friends of cancer patients or for patients themselves the night before an early morning operation or 【B3】 .
"The other day we got a call from a woman who had driven all the way from Michigan to get her husband to Memorial Sloan-Kettering for treatment," said Weinberg. "She and her sons had no place to stay, so the hospital’’s 【B4】 of social work suggested they 【B5】 us. We found a room for them at last."
Since hotel 【B6】 can be very expensive, Weinberg and his volunteer staff find rooms where families can stay—free of charge of course—for one or two nights. They work with 8 hospitals and 19 hotels.
"We’’re 【B7】 on increasing the number of 【B8】 hotels in the New York ar
A. A．function
B．operation
C．commission
D．engagement
[单选题]在信号微机监测系统中完成车站系统与人交互功能的是（ ）。
A.上位机
B.下位机
C.采集机
D. CAN
[判断题]全站停电可不使用工作票。（ ）
A.正确
B.错误
[判断题]使用超过3m的长绳时,可以酌情加上缓冲器、自锁器或防坠器等。
A.正确
B.错误
[判断题] 零线是表示基本尺寸的一条直线,零线以下为正,以上为负。(中)( )
A.正确
B.错误
