热门试题:
[单选题]气相色谱主要是利用物质的( )差异来实现混合物分离。
A.沸点
B.极性
C.与固定相的吸附性质
D.电负性
[单选题] 电力设备秋季鉴定( )一次。
A.每年
B.半年
C.每两年
D.每三年
[单项选择]人民法院在审理下列民事案件时,必须经过调解程序的是()
A. 合同纠纷案件
B. 继承案件
C. 离婚案件
D. 追索劳动报酬案件
[单选题]25型客车车体底架采用无( )结构。
A.侧梁
B.横梁
C.枕梁
D.中梁
[单选题]《企业职工伤亡事故分类(GB6441-1986)》将企业工伤事故分为20类,其中不包括( )
A.交通伤害
B.机械伤害
C.起重伤害
D.冒顶片帮
[单选题]有学者认为,巫觋的地位在夏朝已经急剧下降,不过,巫觋在官方和民间的各种祭祀中仍然发挥作用,其参与的名称各异的戏剧活动,一直延续到今天,现在我们在江西、贵州等到看到的“摊戏”和“地戏”,其将鬼神祭祀与戏剧融合一体的仪式,就多少包含了远古仪式的遗存,诚然,国家在每年春夏秋冬和各节令大典,及遇有战争之类重大事件时,还是会按例举行严肃的祭祀仪礼,但这些仪礼的效用与功能,早就发生了巨大变化。苏轼认为早在夏商周三代,各种祭祀性活动,就已包含非常明显的游戏或戏剧的因素,而祭祀神灵、祖先这一原初动机,反渐渐演变为依附性的功能。
这段文字所在的文章,论述主题最可能是:
A.巫术
B.祭祀
C.戏剧
D.礼仪
[简答题]预应力混凝土梁和钢筋混凝土梁相比有什么优点?
[单项选择]到2010年,高用水行业主要产品单位用水量指标总体达到或接近20世纪90年代初期国际先进水平,其中( )达到21世纪初国际先进水平。
A. 中型企业
B. 大型企业
C. 小型企业
D. 跨国企业
[单项选择]
One evening, long after most people had gone to bed, a friend of mine and I were (21) our way happily home through the silent street. We had been to a (22) and were talking about the people we (23) and heard in it.
"The show made him a star overnight," said my friend about one of them. "He was completely (24) before. And now thousands of people send (25) gifts and letters." "I thought him quite good," I said. "But not (26) thousands of letters. As a matter of (27) one of his songs (28) me a shock. It was too (29) ." "What was that" my friend asked me. "Sing it to me." I began to sing. "Do be (30) , you’ll give everybody a shock and wake them up for miles (31) , besides there will be a policeman after us." My friend gave a surprised look.
"Never mind, I won’t care. What is the matter" I said and wen
A. shape
B. face
C. sound
D. voice
[判断题]如果滤油器堵塞而造成液压泵吸油不足一般应更换新滤油器。( )
A.正确
B.错误
[单选题]在线路上焊接时气温不应低于0℃。放行列车时,焊缝温度应低于( )℃。
A.0
B.20
C.100
D.300
[单项选择]( )不是楼板层的基本组成部分。
A. 结构层
B. 面层
C. 顶棚
D. 承重结构
[单选题]客户甲有1000瑞郎,在USD/CHF汇率为0.98时换成了美元,在AUD/USD汇率为0.98时又换成了澳元,换成的澳元金额为()。
A.1000澳元
B.约980澳元
C.约1020澳元
D.约1041澳元
[单选题]国内信用证单证不符,开证申请人不同意付款的,开证行( )。
A.可做退单处理,将单据退还委托收款行/议付行
B.可做退单处理,将单据退还开证申请人
C.可做退单处理,将单据退还受益人
D.不可退单
[判断题]三相三线有功电能表,由于错误接线,在运行中始终反转,则更正系数必定是负值。
A.正确
B.错误
[多选题]
对于工频交流电,按通过人体的电流强度的不同以及人体呈现的反应不同,将作用于人体的电流划分为(____)。
A. 感知电流
B. 摆脱电流
C. 室颤电流
D. 最大电流
[单项选择]胰酶的合成发生在()
A. 腺泡
B. 泡心细胞
C. 腺泡细胞
D. B细胞
E. 胰岛
[判断题]CTCS3-300S型列控车载设备C3控车时正常,转入C2后输出不可缓解的常用制动,为牵引继电器故障,可换系重启车载设备,如故障不能恢复,报告车站值班员、列车调度员。( )
A.正确
B.错误
[单选题]A321飞机__在应急开启时不会马上被自动拉向机头方向
A.I型门
B.A型门
[单项选择]X射线在空间某一点的强度是指单位时间内通过垂直于X射线传播方向上的单位面积上的光子数量与能量乘积的总和。可见,X射线强度是由光子数目和光子能量两个因素决定的。在医学应用中,常用X射线的量和质来表示X射线的强度。“质”是X射线光子的()
A. 数量
B. 能量
C. 质量
D. 动量
E. 动能
[简答题]食品辐照技术的应用有何特点,试举例说明之。
[简答题]More and more people are complaining about their heavier and heavier pressure from work and life, and they have become more and more frustrated because they couldn’t find a way out.
Recently experts prescribe that following a hobby is the right remedy for such an illness. Write an essay of no less than 250 words on your understanding of hobbies and support your own view with your own experience.
[判断题]工作人员可以上门收取客户现金、支票、本票,以及送达电费发票等。
A.正确
B.错误
[判断题]进入设备容器内进行焊接作业时,必须先经过置换通风,并经取样分析全棉后,再开始施焊
A.正确
B.错误
[单选题]【单选题】飞机着陆的过程是( )
A.减速下滑、拉平接地和减速滑跑三个阶段
B.下滑、拉平、平飘、接地和着陆滑跑五个阶段
C.下滑、拉平、接地、着陆滑跑和刹车五个阶段
[单选题]扩展供电时,当SIV恢复正常工作后,TCMS立即撤销“扩展供电”指令,(D )s后再撤销“空调减载”指令。
A.1
B.2
C.3
D.5
[判断题]运行中的变压器若发出很高且沉重的“嗡嗡”声,则表明电压器过载。
A.正确
B.错误
[多选题]五级应急响应要求( )。
A.公司主要/分管领导应立即响应突发事件应急处置
B.公司安排领导及关键岗位人员在预警期间值守
C.必要时可申请外部相关应急力量支援
D.按集团明确的职责要求响应突发事件应急处置
[判断题]重型轨道车、大型养路机械等自轮运转特种设备在中间站停车会让列车时,必须实施保压制动,减压量应达到100kPa以上,开车前自行缓解。()
A.正确
B.错误
[判断题]负有安全生产监督管理职责的部门在监督检查中,应当互相配合,实行联合检查;确需分别进行检查的,应当互通情况,发现存在的安全问题应当由其他有关部门进行处理的,应当及时移送其他有关部门并形成记录备查,接受移送的部门应当及时进行处理。( )
A.正确
B.错误
[判断题]悬臂梁端的上弯度值可采用相当于悬臂长度的简支梁计算挠度的一半。( )
A.正确
B.错误
[单选题]受限空间作业当被测气体或蒸汽的爆炸下限大于等于( )%,其被测浓度应不大于0.5%
A.2
B.3
C.4
D.5
[单选题]电弧焊时,焊接区周围形成的有毒气体不包括 ( ).
A.臭氧
B.一氧化碳
C.二氧化碳
D.氮氧化物
[单项选择]There are many ways of defining success. It is accurate to say that each of us has our own concept of success to the extent that each of us is responsible for setting our own goals and determining whether we have met these goals satisfactorily. Because each of us possesses unique differences in genetic ability and favorable environments in which to express these abilities, it is necessarily true that we must define success broadly.
For some people, simply being able to live their life with a minimum of misery and suffering is considered a success. Think of the peace of mind of the poor shepherd who tends his sheep, enjoys his frugal life with his family in the beauty of nature, and who is respected because he does a good job of achieving the goals expected of and accepted by him and his society. On the other hand, it seems that even though some people appear to be rich in material possessions, many of them seem to be miserable and consider themselves unsuccessful when judged by th
[单选题]大件重心不稳的工件划线前应( )。
A.用手稳定
B.用块规垫稳
C.除稳定重心外,须调整基准面