热门试题:
[判断题]柴油机混合气形成时间极短，为提高混合气质量，柴油机都采用低压缩比。
[简答题]Protected by sweaters and a leather Jacket against the biting blasts of the earth wind, I walk along the hillside this afternoon. Snow lies drifted among the wild cherries. Where the wind has swept bare the ground, the soil is frozen and rocklike. On this day of bleak cold, the earth seems dead. Yet every field and hillside, like a child, has the seeds and powers of growth hidden within it. From cocoon to bur, on a winter’s day, there is everywhere life, dormant but waiting.
Within the earth there are roots and seeds; on the ’bare twigs ,there are winter buds; buried in soil and mud beneath ice-locked water are the turtles and frogs and dragonfly nymphs; hidden in decaying logs and under snow covered debris are the fertilized queens of the wasps and blumblebees. Everywhere, on all sides of us, as far as winter reigns, life is suspended temporarily. But it has not succumbed. It is merely dormant for the time being, merely waiting for the magic touch of spring. All the blooms of anot
[判断题]电务安全风险控制中，车载设备风险可能导致列车超速运行、系统功能失效,严重的导致列车脱轨的后果。
A.正确
B.错误
[判断题].OPGW光缆缆芯外的绞线主要以AA线(铝合金线)和AS线材(铝包钢线)组成。
A.正确
B.错误
[单项选择]产生经济纠纷，双方协商解决不了时，不可由( )解决
A. 咨询工程师
B. 第三者
C. 法院
D. 双方私自解决
[单选题]国家综合性消防救援队伍《内务条令》实施的时间是( )
A.2019 年 12 月 20 日
B.2019 年 1 月 1 日
C.2020 年 1 月 1 日
D.2018 年 10 月 14 日
[判断题]零售行业商品分类的原则是采用综合分类标准，将所有商品划分为大分类、中分类、小分类和单品4个层次。
[单项选择]工程项目管理层次按从上到下的顺序是( )。
①操作层；②协调层；③决策层；④执行层
A. ③-④-①-②
B. ③-②-④-①
C. ④-①-②-③
D. ①-②-④-③
[单选题]1地下工程施工的安全出入口、疏散走道和楼梯的宽度应按其通过人数每（）人不小于1m的净宽计算。
A.100
B.200
C.300
D.400
[单选题]我国最常用的膳食调查方法是( )
A.称重法
B.查账法
C.询问法
D.分析法
E.食物频率法
[单项选择]
Every newborn baby is dealt a hand of cards which helps to determine how long he or she will be allowed to play the game of life. Good cards will help those who have them to have a long and healthy existence, while bad cards will bring to those who have them terrible diseases like high blood pressure and heart disease. Occasionally, cards are dealt out that doom their holders to an early death. In the past, people never knew exactly which cards they had been dealt. They could guess at the future only by looking at the kind of health problems experienced by their parents or grandparents.
Genetic testing, which makes it possible to find dangerous genes, has changed all this. But, until recently, if you were tested positive for a bad gene you were not obliged to reveal this to anyone else except in a few extreme circumstances. This month, however, Britain became the first country in the world to allow life insurers to ask for test results.
So far, approval has been g
A. to enable people to change genes
B. to help people to create good genes
C. to predict diseases people may have
D. to detect accurately what diseases people may develop
[单选题]三相交流电源可供给( )。
A.只可供给线电压
B.相电压
C.只供一种电压
D.线电压与相电压
[单选题]无论是社会的和谐有序,还是个人的人格健全,都有赖于( )的不断提升。 ( )
A. 思想道德
B. 个人品德
C. 法治思维
D. 文明素养
[多选题]门禁就地设备年检作业中，需要检查哪些项
A.刷卡测试
B.出门按钮测试
C.就地控制器箱接线检查
D.检查正确就地控制箱体正确错误完好，封堵完整，门锁完好
E.检查紧急出门按钮正确错误完好
[判断题]强制执行决定书应当自决定之日起三个工作日内制作、送达当事人。( )
A.正确
B.错误
[多项选择]国民经济和社会发展规划是国家加强和改善宏观调控的重要手段，也是政府履行( )职责的重要依据。
A. 经济决策
B. 经济调节
C. 社会管理
D. 市场监管
E. 公共服务
[单项选择]根据《中华人民共和国宪法》（以下简称《宪法》）和《立法法》等有关法律的规定，由省、自治区、直辖市和较大的市的人民代表大会及其常务委员会，根据本行政区域的具体情况和实际需要，在不与宪法、法律、行政法规相抵触的前提下制定的规范性文件，以及自治州、自治县的人民代表大会常务委员会依照法定职权和程序制定的自治条例和单行条例属于（）。
A. 国家法律
B. 行政法规
C. 国务院部门规章
D. 地方性法规
[判断题]世界上的万事万物既作为个体事物存在,又作为联系中的事物存在。
A.正确
B.错误
[单项选择]Which statement describes the Authentication Proxy feature？（）
A. All traffic is permitted from the inbound to the outbound interface upon successful authentication of the user.
B. A specific access profile is retrieved from a TACACS+ or RADIUS server and applied to an IOS Firewall based on user provided credentials.
C. Prior to responding to a proxy ARP，the router will prompt the user for a login and password which are authenticated based on the configured AAA policy.
D. The proxy server capabilities of the IOS Firewall are enabled upon successful authentication of the user.
[单项选择]（）的折光率为1.762~1.770。
A. 绿松石
B. 砾石
C. 红宝石
D. 月光石
[多选题] 起重指挥人员在指挥吊运时应选择的位置正确的是( )。
A..与起重驾驶员之间视线清楚
B.应始终清楚地看到被吊物
C..当被吊物向指挥人员靠近时,不应构成威胁
D.吊物正下方
E..任何地方都可以
[单项选择]新生儿早期哺乳，要求在出生后( )。
A. 20分钟内
B. 30分钟内
C. 45分钟内
D. 60分钟内
E. 2小时内
[单选题]照明系统宜使三相负荷平衡,其中每一单相回路上,灯具和插座的负荷电流不宜超过( )。
A.5A
B.10A
C.15A
D.20A
[单选题]患者,女,24岁。反复发作性一侧额颞部搏动样疼痛,伴
有恶心、呕吐,畏光、畏声,出汗,头皮触痛等症状。月经期
时头痛更明显,常因头痛发作不能正常工作。脑MRI检查正常。应诊断为()
A.有先兆偏头痛
B.基底型偏头痛
C.从集性头痛
D.紧张型头痛
E.无先兆偏头痛
[单项选择]下列不属于国内水路、陆路（公路、铁路）运输货物保险基本险的保险责任是（）。
A. 因火灾、爆炸、雷电、冰雹、暴风、洪水、海啸、地陷、崖崩、突发性滑坡、泥石流造成的损失
B. 由于运输工具发生碰撞、搁浅、触礁、沉没、倾覆、出轨或隧道、码头坍塌所造成的损失
C. 因受震动、碰撞、挤压而造成货物破碎、弯曲、折断、凹瘪、开裂、渗漏等损失，以及包装破裂致使货物散失的损失
D. 在装货、卸货或转载时，因遭受不属于包装质量不善或装卸人违反操作规则所造成的损失
[单选题]以下关于扣件式钢管脚手架计算的陈述,正确的是().
A.连墙件一般按三跨连续梁计算
B.立杆一般按三跨连续梁计算
C.横向水平杆一般按简支梁计算
D.纵向水平杆一般按简支梁计算
[判断题]生产经营单位的特种作业人员必须按照国家有关规定经专门的安全作业培训,方可上岗作业。
A.正确
B.错误
[单选题]After writing the letter, she put it in the __________ and sealed ( ) it.
A. cover
B. envelope
C. sheet
D. box
[单项选择]牙本质龋时，最先发生的牙本质的变化是 （）
A. 崩解
B. 小管扩张
C. 脱钙
D. 脂肪变性
E. 细菌侵入
