热门试题:
[单项选择]对于功率较大、不需要调速、长期工作的各种生产机械,如压缩机、水泵、通风机等,多采用()驱动。
A. 三相异步电动机
B. 直流电动机
C. 同步电动机
D. 步进电动机
[单选题]61、工件的体外作用尺寸是
A.设计给定的
B.加工后形成的
C.即可以设计给定又可以加工后形成
[单选题]应用红外线烤灯时,应距治疗部位
A.10~20cm
B.21~29cm
C.30~50cm
D.51~60cm
E.61~70cm
[单项选择]下列明细分类账中,可以采用多栏式格式的是( )
A. 应付账款明细分类账
B. 待摊费用明细分类账
C. 库存商品明细分类账
D. 管理费用明细分类账
[单选题]当前,世界处于百年未有之大变局,国内外形势正在发生深刻复杂变化,我国发展仍处于重要( ),前景十分光明,挑战也十分严峻。
A.战略发展期
B.战略机遇期
C.战略调整期
D.战略规划期
[单选题]绕越计量装置用电的,所窃电量按私接设备( )乘以实际使用时间计算确定。
A.额定容量
B.最大容量
C.最小容量
D.最大负荷
[单选题]办理银(社)团贷款业务应遵循“市县发起、自愿参加、信息共享、独立审批、自主决策、自担风险”的原则。
A.正确
B.错误
[填空题]按照新风量不得低于( )以循环回风为主,新、排风为辅的全空气空调系统,在疫情期内,采用全新风运行,以防止交叉感染。
[判断题] TDCS系统由调度指挥中心和车站子系统组成。
A.正确
B.错误
[单选题]涂装涂料涂层时,钢表面粗糙度为( )μm 。
A. Rz25~60
B.Rz25~70
C.Rz25~50
D.Rz25~100
[单选题]小张驾车发生重大交通事故后逃逸,归案后被法院以交通肇事罪判处有期徒刑2年,并被公安机关交通管理部门吊销机动车驾驶证,其( )不得重新取得机动车驾驶证。
A.2年内
B.3年内
C.5年内
D.终生
[单项选择]下列哪项是固化剂的代号()。
A. X
B. F
C. G
D. H
[单选题]ATSU从哪里获取ICAO代码,以下说法最准确的是?
A.ATC1
B.ATC2
C.首先从ATC1获取,如果ATC1故障,转从ATC2获取
D.从当时工作的ATC获取
[单选题]DL/T448-2016《电能计量装置技术管理规程》。当主副电能表误差均合格,但二者所计电量差与主表所计电量的相对误差大于电能表准确度等级值的( )倍时,应更换误差较大的电能表。
A.0.5
B.1.2
C.1.5
D.1.7
[单选题]’年11月中旬,我国广西地区发现一处世界级天坑群——那坡天坑群。关于天坑,下列说法正确的是:
A.是一种喀斯特地貌
B.均位于海拨100米以下地区
C.主要分布在高纬度地区
D.是一种地质灾害现象
[不定项选择题]共用题干
第三篇
Archive Gallery: The Best of Bionics(仿生学)
Humans might be the most highly-evolved species on the planet,but most animals possess skills we can
only dream of having.Imagine how much electricity we could save if we could see in the dark the way cats
do. Imagine leaping from tree to tree like a monkey.Giraffes(长颈鹿),which are otherwise calm and good-
natured,sleep only 4.6 hours a day.
We realized a long,long time ago that nature provides the best blueprint(蓝图)for invention.We've
borrowed canals from beavers(河狸)and reflectors from cat's eyes.Although the words "bionics" became
popular only after the 1960s,history shows that nature has always provided ideas on solving everyday prob-
lems. Our archives(档案)don't go back to the time of Leonardo da Vinci and his bird-like flying machines,
but we can take you to the late 19th century,where we applied those same principles for building our first
practical airplanes.
To prepare for their flight at Kitty Hawk,the Wright brothers studied the movements of pigeons to figure
out how they stayed high up when they were heavier than air. Their success inspired scores of successors to
improve on the airplane by studying various aspects of nature,One of Orville Wright’、pupils caught and
stuffed seagulls to examine their wingspan.Meanwhile,two French inventors examined spinning sycamore(美
国梧桐)seeds in an effort to apply those same motions,reversed,to a helicopter.
Some examples are more obvious than others.The outside of the airplane designed by the Wright
brothers looks like a minimalistic(简单抽象艺术)structure. On the other hand , Barney Connett ' s fish
submarine(潜水艇)actually looks like a fish.
Some bio-inspired concepts have yet to be invented.In the 1960s,the US Army commissioned several
university professors to conduct research on the motor skills of animals in hope of applying those same abili-
ties to tanks. Tanks that run like horses or jump like grasshoppers(蚂昨)一sounds shocking,doesn't it?
But imagine how life would change if we could achieve that.
Which of the following is true about the research carried out by the US Army?
A.It has changed our life.
B.It has cost a large sum of money.
C.It has improved the abilities of tanks.
D.It has not succeeded yet.
[填空题]列车运行途中,车站有关人员(其他部门人员发现时,通知车站)发现旅客列车车辆走行部有冒烟、冒火星、车轮发红等抱闸情形时,应<--NRC-->。
[单项选择]青春期甲状腺肿,肿大明显时首选的治疗方法是
A. 口服硫氧嘧啶类药物
B. 行甲状腺大部分切除术
C. 口服甲状腺素片
D. 行放射性核素碘治疗
E. 多食营养丰富的食物
[单选题]胎儿娩岀后,凝血功能障碍引起的阴道持续流血最可能的是( )
A.阴道流血色鲜红,可伴血块
B.阴道流血色暗红,可伴血块
C.阴道流血色褐色,无血块
D.阴道流血色鲜红,不凝
[填空题]火药库必须有(),分清规格品种,整齐存放。
[单选题]通过一个线圈的电流越大,产生的磁场( )
A.都可能
B.越弱
C.不变
D.越强
[判断题]氧气、乙炔气瓶使用完必须将瓶内气体放空。
A.正确
B.错误
[单选题]凝汽器更换新铜管时,在水压试验完毕后应再抽取总数()的铜管截段做氨熏试验,以检验铜管的残余应力是否合格。
A.1%~2%
B.11%~12%
C.21%~22%
D.31%~32%
[判断题]轨道车在转站、专用线停运及过夜时必须采取防溜措施。
A.正确
B.错误
[单项选择]Questions 11 to 18 are based on the conversation you have just heard.
A. He was very sad.
B. He was very angry.
C. He was very nervous.
D. He was very happy.
[多选题]正常车流增大造成全线大塞车时,以下操作流程准确有( )。
A.当班班长应立即报告值班站长和监控中心,站长组织人员疏导交通
B.开通所有备用通道
C.准备好票据和零钞
D.当班监控员了解情况后立即报告主管领导做进一步处理
E.免费车
[简答题]使用风力除雪机作业,对现场防护有哪些要求?
[多选题]对法人机构高管人员信贷管理责任认定与处理遵循____的原则,由省联社进行认定,各级机构按干部管理权限进行处理
A.实事求是
B.公平公正
C.有责必究
D.尽职免责
[单选题]甲公司2017年主营业务收入12500万元,主营业务成本8500万元,其他业务收入200万元,其他业务成本120万元,营业税金及附加230万元,期间费用550万元,公允价值变动收益500万元,投资损失200万元,处置固定资产净损失50万元,取得即征即退的增值税200万元。则甲公司当年的营业利润为( )万元。
A.3600
B.3750
C.3550
D.3800
[判断题]王某对成都市锦江区公安分局东光派出所拘留5日不服申请行政复议,复议机关为锦江区公安分局和区政府
A.正确
B.错误
[单选题]我国社会主义法律体系的核心是( )。
A.宪法
B.行政法
C.刑法
D.程序法
[单项选择]在LINUX操作系统中下列哪一个命令可以用来显示主机名称()
A. host
B. dig
C. hostname
D. nslookup