热门试题:
[简答题]无线射频识别(RFID)技术与其他自动识别技术有哪些异同?
[单项选择]()不会影响晒版时间。
A. 灯源强度
B. 波长性质
C. 灯源强弱
D. 晒版机大小
[判断题]带电高处作业必须穿绝缘服、均压服。
A.正确
B.错误
[单选题]电气化铁路区段车站风雨棚、跨线桥等构建物,距牵引供电设备( )m范围内不得出现漏水、悬挂冰凌等现象。
A.1
B.2
C.2.5
D.3
[简答题]路风系指铁路__________,是铁路的性质、宗旨和经营方向在运输企业和职工中的综合表现。
[单项选择]水中含有大量铁则有()。
A. 苦味
B. 涩味
C. 霉味
D. 沼泽味
E. 汽油味
[单项选择]All of the following are true except that______.
A. the shareholders were unaware of the needs of the workers
B. the old firm owners hand a better understanding of their workers
C. the limited liability companies were too large to run smoothly
D. the trade unions seemed to play a positive role
[单项选择]MIDI enables people to use (11) computers and electronic musical instruments. There are actually three components to MIDI, the communications " (12) ", the Hardware Interface and a distribution (13) called "Standard MIDI Files" . In the context of the WWW, the most interesting component is the (14) Format. In principle, MIDI files contain sequences of MIDI Protocol messages. However, when MIDI Protocol (15) are stored in MIDI files, the events are also time-stamped for playback in the proper sequence. Music delivered by MIDI files is the most common use of MIDI today.
A. device
B. protocol
C. network
D. controller
[单项选择]下面哪种装置可用来抑制不需要的高频谐波?()
A. 低通滤波器;
B. 振荡器;
C. 相位鉴别器;
D. 高通滤波器.
[单选题]以下各抽样方法中,属于概率抽样的是( )。
A.随意抽样
B.整群抽样
C.定额抽样
D.估计抽样
[简答题]案列9:
2016年5月18日22时05分,某发电厂1号发电机组正常运行,电气运行人员李XX巡视过程中发现辅助变(干式变压器)温度高报警,汇报值长联系检修人员现场处理,电气检修夜班值班人员李XX到辅助低压配电室进行检查,李XX检查发现辅助变冷却风机烧毁,汇报电气专工张XX后进行更换冷却风机作业。因发电厂配发的安全帽有近电报警功能,李XX在进行更换冷却风机作业过程中摘掉安全帽。更换完毕后,李XX站起时幅度过大,头部碰触辅助变低压侧母排,触电身亡。
试分析该起事件中违反安规的行为。
[单项选择]
以下是用ASP实现的一个在线留言系统。
index.html 文档如下:
<html>
<head>
<title>在线留言系统</title>
</head>
<body>
<p align= "center" ><font color="#006699">在线留言系统</font></p>
<form method="post" action="submit.asp">
<table border="0" cellspacing="l" width="89%">
<tr>
<td>姓名: </td>
<td>< (2) name="name" size="30" class="text"maxlength="20"></td>
</tr>
<tr>
性别: </td>
<td>< (3) name="sex" size="1"
<option selected>请选择你的性别</option>
<option value="男">男</option>
<option value:"女">女</option>
</select></td>
</tr>
<tr>
<td><b>简短留言: </b></td>
<td>< (4) name:&q
A. submit
B. update
C. append
D. refresh
[判断题]( )金属材料在加热时抵抗氧化作用的能力称为抗氧化性。
A.正确
B.错误
[单选题]以下属负压式泡沫比例混合系统的是( )。
A.环泵式泡沫比例混合系统
B.平衡阀式泡沫比例混合系统
C.压缩空气泡沫系统
[判断题]根据《电力安全工作规程 风电场》( Q/GDW 10799.5—2017),在杆塔上作业时,应使用有后备保护绳或速差自锁器的双控背带式安全带,当后备保护绳超过3m时,应使用缓冲器。
A.正确
B.错误
[填空题]Can we generate the new cultural attitudes required by our technological virtuosity History is not very reassuring here. It has taken centuries to learn how to live (S1) ______ in the family, the tribe, the city, the state, and the nation. Each new (S2) ______ of human sensitivity and loyalty has taken generations to become firmly (S3) ______ in the human mind. And now we are forced into a quantum leap from the mutual suspicion and (S4) ______ that have marked the past relations between peoples into a world in which mutual respect and comprehension are necessary.
Even events of recent decades provide little basis for (S5) ______ Increasing physical proximity has brought no millennium in human relations. If anything, it has appeared to intensify the divisions among people rather than to create a broader (S6) ______ Every new reduction in physical distance has made us more painfully aware of the psychic distance that divides people and has increased alarm over real or imagined diffe
[单项选择]解磷定对哪种有机磷酸酯中毒治疗无效()
A. 对硫磷
B. 马拉硫磷
C. 敌敌畏
D. 敌百虫
E. 乐果
[判断题]进入SF6配电装置室后应立即开启通风设备。
A.正确
B.错误
[单项选择]A mysterious "black cloud" approaches the earth -- our planet’ s weather is severely affected.
Throughout the rest of June and July temperatures rose steadily all over the Earth. In the British Isles the temperature climbed through the eighties, into the nineties, and moved towards the hundred mark. People complained, but there was no serious disaster.
The death number in the U. S. remained quite small, thanks largely to the air - conditioning units that had been fitted during previous years and months. Temperatures rose to the limit of human endurance throughout the whole country and people were obliged to remain indoors for weeks on end. Occasionally air - conditioning units failed and it was then that fatalities occurred. Conditions were utterly desperate throughout the tropics as may be judged from the fact that 7943 species of plants and animals became totally extinct. The survival of man himself was only possible because of the caves and cellars he was able to dig. Noth
A. the temperature grew extremely hot
B. the temperature became damper and hotter as the humidity of the surface waters of the sea increased
C. their conditions were too dangerous
D. nothing could be done with the hot temperature
[判断题]变压器的损耗,近似地与变压器所接的电压成正比。( )
A.正确
B.错误
[单项选择]以下不属于以太网帧结构组成的是( )。
A. 前导码与帧的前定界符
B. 目的地址与源地址
C. 帧校验字段
D. 帧尾
[单选题]第二审人民法院对不服第一审判决的上诉、抗诉案件,经过审理后,原判决事实不清楚或者证据不足的,处理的方式为( )。
A.应当在查清事实后改判
B.应当裁定撤销原判,发回原审人民法院重新审判
C.可以在查清事实后改判;也可以裁定撤销原判,发回原审人民法院重新审判
D.应当维持原判
[多项选择]火腿最容易变质的部位是______。
A. 外层部位
B. 油头部位
C. 接近骨骼的部位
D. 肌肉深部
E. 大爪部位
[多选题]信用风险压力测试的传导路径包括( )。
A.自上而下法
B.自内而外法
C.自外而内法
D.自下而上法
[单选题]“ ”负责组织制定动车组运用维修作业办法,明确检修项目、检修周期、检修内容、技术要求及检修工艺等。
A.总公司
B.铁路局集团公司
C.动车段
D.动车所
[单选题]下列不是PowerPoint视图方式的是( )
A.大纲视图
B.页面视图
C.普通视图
D.幻灯片视图
[判断题]个人活期存款客户在开户时可不存入现金开立零余额账户。
A.正确
B.错误
[判断题] 在操作离子交换器时,应先打开出口节门,再开启进口节门。
A.正确
B.错误
[单选题]中心站主机应不少于()台,1台备用。
A.1
B.2
C.3
D.\
[单选题]在固定资产更新项目的决策中,下列说法不正确的是( )。
A.如果未来使用年限不同,则不能使用净现值法或内含报酬率法
B.平均年成本法把继续使用旧设备和购置新设备看成是更换设备的特定方案
C.平均年成本法的假设前提是将来设备再更换时,可以按照原来的平均年成本找到可代替的设备
D.平均年成本法把继续使用旧设备和购置新设备看成是两个互斥的方案
[填空题]滚动轴承每运行()小时补充黄油一次(一般可在小修时更换)。
[多项选择]按照我国目前的有关规定,下列表述中属于施工定额特性的是( )。
A. 编制概算定额的基础
B. 企业定额
C. 和施工生产结合紧密
D. 直接应用于施工项目的施工管理
E. 以同一性质的施工过程为标定对象
[单选题]遇带电电气设备着火时,应使用( )进行灭火。
A.A-干粉灭火器
B.B-水
C.C-泡沫灭火器
D.D-砂子
[判断题]党员持《流动党员活动证》外出后,在原所在党组织仍享有表决权、选举权和被选举权。 ( )
A.正确
B.错误
[判断题] 脱硫系统因故障停运后,应立即将吸收塔内的浆液排到事故浆液箱。( )
A.正确
B.错误
[多项选择]铁路无线调车灯显系统便携设备应能在()或身挂的条件下使用。
A. 手持
B. 袋装
C. 通话
D. 接收
[单项选择]十个月男婴,因腹泻3天伴呕吐入院。大便每天6~9次,蛋花汤样,略带腥臭,1天来口干少尿。患儿以牛奶喂养为主,家长卫生习惯差,既往无腹泻史。体格检查:T38℃,精神差,哭时泪少,前囟眼窝凹陷,唇干,心、肺正常。腹软,肠鸣音活跃。大便常规:色黄,有黏液,白细胞数0~5/HP。下列因素与本例发生腹泻有关,除了()
A. 人工喂养,卫生习惯差
B. 天气过热,使胃酸和消化酶分泌减少
C. 婴幼儿胃肠道功能较薄弱
D. 乳糖酶缺乏,不能耐受乳类食品
E. 婴儿血中免疫球蛋白及胃肠SIgA较成人少
[单选题]在跨区间无缝线路上的无缝道岔尖轨及其前方() m范围内进行影响线路稳定的作业时,作业轨温范围为实际锁定轨温±10 ℃。
A.10
B.25
C.50
D.75
[判断题]电缆施工完成后应将穿越过的孔洞进行封堵。()
A.正确
B.错误