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[多项选择]沸点分布范围宽的多组分有机化合物样品的分离应选取的条件有()。
A. 填充柱
B. 毛细管柱
C. 恒温分析
D. 程序升温
E. FID检测器

热门试题:

[单项选择]More than any other industry, the luxury-goods business needs people to feel good about spending money. So at a recent conference in Moscow, Bernard Arnault, the head of Moet Hennessy Louis Vuitton (LVMH), the world’s biggest luxury-goods group, went to great lengths to dismiss investors’ fears about the impact on the industry of America’s credit crisis, a possible recession and the weak dollar. Indeed, Mr. Arnault said he expects the industry’s sales almost to double in the next five years, thanks to strong demand from emerging markets and the creation of new wealth across the globe.
After a depressing period at the beginning of the decade when the terrorist attacks in America, the outbreak of SARS and the war in Iraq reduced international travel and people’s appetite for frivolous things, the industry has had three excellent years. According to Bain, a consultancy, sales of luxury goods grew by 9% in 2006 to 159 billion ($ 200 billion) and will reach about 170 billion this year
A. The subprime mortgage and subsequent credit crisis in US.
B. Possible recession of the world economy.
C. Dollar will very probably be weak in the coming months.
D. Luxury goods lack innovation and creativity than before.
[多选题]调试验收阶段,应对站用电备自投开展如下 (____)检验。
A.验证备自投配合和动作时序是否正确
B.检验切换过程对各装置运行的影响
C.检验切换过程电压是否稳定
D.是否影响各类负荷运行,以及是否会导致直流闭锁
[单选题]信托制度起源于( )。
A.美国
B.英国
C.意大利
D.法国
[报关编码]未漂白其他全棉机织缎布
[单选题]关于通缉,下列说法正确的是( )。
A.县级以上公安机关在自己管辖的地区以内,可以直接发布通缉令;超出自己管辖的地区,应当报请有权决定的上级公安机关发布
B.通缉令发出后,不能撤销
C.通缉的对象是可能被判处无期徒刑、死刑以上刑罚的犯罪分子
D.通缉是《刑事诉讼法》规定的强制措施之一
[多选题]关于中型变压器和大型变压器,表述正确的是():
A.中型变压器:三相最大额定容量不超过66.6MVA
B.中型变压器:单相最大额定容量不超过33.3MVA
C.大型变压器:单相最大额定容量在66.6MVA及以上
D.大型变压器:三相最大额定容量100MVA及以上
[单选题]以下可以直接进彳亍动火作业的是( )。
A.盛装过汽(柴)油容器
B.瓦斯隧道内瓦斯浓度大于0.5%
C.盛装过水的容器
D.曾盛装过气体受热膨胀的管道
[单选题]作业开工前,工作负责人或()若认为现场实际情况与原勘察结果可能发生变化时,应重新核实,必要时应修正、完善相应的安全措施,或重新办理工作票。
A.工作许可人
B.工作监护人
C.工作分组负责人
D.工作分组监护人
[单项选择]以下表述错误的是:()
A. 报关企业非法代理他人报关或者超出海关准予的从业范围进行报关活动的,处5万元以上罚款,暂停其6个月以内从事报关业务
B. 报关企业非法代理他人报关或者超出海关准予的从业范围进行报关活动的,处5万元以下罚款,暂停其6个月以内从事报关业务;情节严重的,撤销其报关注册登记
C. 报关员非法代理他人报关或者超出范围进行报关活动的,处5万元以下罚款,暂停 6个月内报关执业
D. 报关员非法代理他人报关或者超出范围进行报关活动的,处5万元以下罚款,暂停 6个月内报关执业;情节严重的,取消其报关从业资格
[判断题]人们在互联网上遇到的最大的困难是如何快速、准确地从浩如烟海的信息资源中找到自己最需要的信息,这已成为困扰网络用户最主要的问题。
[单选题]硬度的测定,在PH为( )缓冲溶液中,用铬黑T等作指示剂,以EDTA标准溶液滴定至纯蓝色为终点。A.8.0±0.1 B.9.0±0.1 C.10±0.1
A.A
B.B
C.C
D.D
[单项选择]面神经颊支损伤表现为
A. 下唇歪斜
B. 鼓腮障碍
C. 额纹消失
D. 眼睑不能闭合
E. 伸舌时偏向患侧
[判断题]如果在计划时间内遇到短时间不能解决的故障,无法正常完成扩容操作,必须果断进行倒回操作。 During the expansion, if we cannot complete the expansion successfully because a fault occurs and cannot be resolved shortly within the planned time, we should roll back immediately.
A.正确
B.错误
[单项选择]

In bringing up children, every parent watches eagerly the child’s learning of each new skill -- the first spoken words, the first independent steps, or the beginning of reading and writing. It is often tempting to hurry the child beyond his natural learning rate, but this can set up dangerous feeling of failure and states of worry in the child. This might happen at any stages. A baby might be forced to use a toilet too early, a young child might be encouraged to learn to read before he knows the meaning of words he reads. On the other hand, though, if a child is left alone too much, or without any learning opportunities, he loses his natural enthusiasm for life and his desire to find out new things for himself.
Parents vary greatly in their degree of strictness towards their children. Some may be especially strict in money matters, and others are severe over times of coming home at night or punctuality for meals. In general, the controls imposed represent th
A. should be avoided
B. is universal among parents
C. sets up dangerous states of worry in the child
D. will make him lose interest in learning new things

[判断题]消防安全重点单位应当保障疏散通道畅通。()
A.正确
B.错误
[单选题]在两线中间接发列车时,必须( )接车。
A.在规定的标画地点
B.在无列车的线路上
C.靠近停留列车或车列旁
[单项选择]某外贸企业(增值税一般纳税人)收购一批鞭炮、焰火出口,支付收购价款100000元和增值税17000元,取得增值税专用发票,支付运输费2000元;该批鞭炮、焰火出口离岸价格120000元人民币,增值税退税率13%,鞭炮、焰火的消费税税率为15%,则该企业申请退还增值税和消费税合计数为( )。
A. 35000元
B. 33600元
C. 28000元
D. 26000元
[判断题]为确保人身安全,在气候恶劣(如:台风、暴雨、复冰等)、河水泛滥、火
灾和其它特殊情况下不应对线路进行巡视或检查。
A.正确
B.错误
[单选题]液化石油气处置过程中倒罐、转移必须在( )的掩护下进行,以确保安全。(难)
A.喷雾水枪
B.消防水炮
C.泡沫枪
D.直流水枪
[多选题]下列特产与其产地对应正确的是()。
A.羊肉泡馍——陕西
B.熏肉大饼——山东
C.竹筒饭——云南
D.十八街麻花——天津
[多选题]《广西电网有限责任公司应急值班与信息报送业务指导书》第5.3.4条 预警信息主要是指在发布预警期间,预警范围内的各级单位对本单位相关( )等信息。
A.事件监测
B.动态预测
C.相应应急准备
D.应急响应
[单项选择](中等)纵隔良性肿瘤多呈:
A. 膨胀性生长,进展缓慢
B. 浸润性生长,进展迅速
C. 时有时无,位置不定
D. 忽大忽小,形态多变
E. 抗炎治疗可迅速缩小
[多选题]柱上断路器的本体缺陷有( )
A.A.瓷件受损
B.B.外壳锈蚀
C.C.套管破损、裂
D.D.分合位置指示不正确
[单选题]下滑信标保护区的()区内应经常除草,是因为草长高影响下滑信号的质量。
A.A
B.B
C.C
D.D
[单项选择]

In spring of 2004, when US gas prices hit US $2 a gallon, University of Washington senior Jo Blue kept on driving. After Hurricane Katrina last August, prices topped US $3 a gallon. But Blue kept driving. Now, when prices have leveled at about US $2.25, she still commutes an hour everyday to her job as a swim coach. Blue has to get to work and public transportation is not an option. Buses to the suburb where she works are infrequent, so Blue has no choice but to spend US $30 a week on gas.
High gas price, which began to soar in 2004, have Americans-whose way of life depends on cars- complaining, but not doing much to change the country’s car culture.
Like Blue, most Americans, except those in major cities, drive to work. Many live in sprawling suburbs which are accessible only by car. The average American spends 55 minutes each day behind the wheel, according to the US Department of Transportation. In 2003, the US’s 290,000 residents registered 237,000
A. a luxury
B. necessary
C. sustainable
D. unsustainable

[单选题]调车模式是动车组进行调车作业的固定模式,限速值为()。
A.30km/h
B.40km/h
C.50km/h
D.60km/h
[简答题]试述HXD3型电力机车准恒速运行时的操作方法?
[判断题]磷是煤中的有害元素之一,对于煤的利用(特别是炼焦煤)有很大影响。
[判断题]旅客从无人售票的乘降所(包括集团批准办理客运,但未设专人售票的会让站)上车时,到站补票不收补票手续费。
A.正确
B.错误
[单项选择]东软开始进入BPO业务始于()。
A. 2003年
B. 2002年
C. 2004年
D. 2005年
[判断题]负有安全生产监督管理职责的部门和有关地方人民政府对事故情况不得隐瞒不报、谎报或者迟报。
A.正确
B.错误
[单项选择]男性,20岁,肩抬重物,突感下腹坠痛,发现右腹股沟区有3 cm×3 cm团块,硬,有触痛,不能推动,最可能的诊断是:()
A. 腹股沟直疝嵌顿
B. 股疝嵌顿
C. 滑动疝嵌顿
D. 腹股沟斜疝嵌顿
[判断题]赔偿请求人凭生效的判决书、复议决定书、赔偿决定书或者调解书,向赔偿义务机关申请支付赔偿金()
A.正确
B.错误
[单选题]对正压式空气呼吸器使用、维护描述正确的是()
A.A.可以用于水中
B.B.使用后应有专人进行维护、保养
C.C.每次都必须在满压状态下使用
D.D.蜂鸣器报警时呼吸器还可使用30min左右
[不定项选择题]A.后果特别严重
A.其他严重情节
B.对人体健康造成严重危害
C.其他特别严重
D.生产、销售假药,致人重度残疾,属于( )。
[判断题]无线调车灯显设备、无线调车机车信号和监控系统的使用、维修及管理办法由铁路局规定。
A.正确
B.错误
[单项选择]下列哪项不属于提高结构延性的构造措施()
A. 强柱弱梁
B. 强剪弱弯
C. 强节点弱构件
D. 强梁弱柱

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