热门试题:
[判断题]容器中的水在定压下被加热,当水和蒸汽平衡时,此时蒸汽为过热蒸汽。( )
A.正确
B.错误
[单选题]政府专职消防员担任班长以上职务的培训考核工作由支队政治部统一组织实施。培训时间一般不少于（）天。
A.15
B.20
C.25
D.30
[多选题]《安全生产法》规定“从业人员的义务”有哪些?
A.遵章守规,服从管理
B.正确佩带和使用劳保用品
C.接受培训,掌握安全生产技能
D.发现事故隐患或其他不安全因素及时报告
[单项选择]( )为资源决定型，其特点主要体现为产业的增长速度和规模主要由资源的储量、质量及开发成本决定，对科学技术的依赖处于相对次要的地位。
A. 高层结构阶段
B. 低层结构阶段
C. 中层结构阶段
D. 次中层结构阶段
[单项选择]下列哪一项对诊断胎儿脊柱裂伤最有帮助（）
A. 胎儿脑积水
B. 中孕早期胎儿颅骨环呈"柠檬"征
C. 脊椎管呈封闭的环状强回声
D. 脊椎完整
E. 羊水多
[单项选择]下列选项不正确的说法是（）。
A. 所有的信号都能用确定的时间函数来描述
B. 在时域中模拟信号用连续的时间函数描述
C. 若交流电压信号是周期信号，可用周期时间函数描述
D. 阶跃信号是非周期信号zo，可用单位阶跃函数描述
[多选题]电客车ERM数据记录中，故障数据文件名称为（ ）。
A.RundataFast_日期_序号
B.FaultRecorder _0
C.FaultRecorder _1
D.TrigerRecorder_(0,1)
E.LoadRateRecorder _0
[多选题]我行理财客户风险承受能力等级分为()
A.谨慎型
B.稳健型
C.平衡型
D.成长型
E.进取型
[判断题]扑救影剧院火灾时,应充分利用室内消火栓出枪扑救火灾()。( )→易
A.正确
B.错误
[判断题](类别：号段管理 难度：中等)根据客户拜访的相关内容，一次拜访，只能有一个目标。( )
A.正确
B.错误
[单选题]停电检修时,在一经合闸即可送电到工作地点的开关或刀闸的操作把手上,应悬挂如下()标示牌。
A.在此工作
B.止步,高压危险
C.禁止合闸,有人工作
[单选题]安全工器具宜存放在温度为－15℃~+35℃、相对湿度为（）以下、干燥通风的安全工器具室内。
A.80%
B.60%
C.40%
D.20%
[单选题]抽油机井采油曲线可以用来选择合理的( )。
A.A、工作制度
B.B、采油方式
C.C、泵径
D.D、载荷
[单项选择]Recent years have brought minority-owned businesses in the United States unprecedented opportunities—as well as new and significant risks. Civil right activists have long argued that one of the principal reasons why Blacks, Hispanics and other minority groups have difficulty establishing themselves in business is that they lack of access to the sizable orders and subcontracts that are generated by large companies. Now Congress, in apparent agreement, has required by law that businesses awarded federal contracts of more than $500, 000 do their best to find minority subcontractors and record their efforts to do so on forms filed with the government, Indeed, some federal and local agencies have gone so far as to set specific percentage goals for apportioning parts of public works contracts to minority enterprises. Corporate response appears to have been substantial. According to figures collected in 1977, the total of corporate contracts with minority businesses rose from $77 million in 1972 to 1.1 billion in 1977. The projected total of corporate contracts with minority businesses for the early 1980"s is estimated to be over $3 billion per year with no letup anticipated in the next decade. Promising as it is for minority businesses, this increased patronage poses dangers for them, too. First, minority firms risk expanding too fast and overextending themselves financially, since most are small concerns and, unlike large businesses, they often need to make substantial investment in new plants, staff, equipment and the like in order to perform work subcontracted to them. If, thereafter, their subcontracts are for some reason reduced, such firms can face potentially crippling fixed expenses. The world of corporate purchasing can be frustrating for small entrepreneurs who get requests for elaborate formal estimates and bids. Both consume valuable time and resources, and a small company"s efforts must soon result in orders, or both the morale and the financial health of the business will suffer. A second risk is that White owned companies may seek to cash in on the increasing apportionment through formation of joint ventures with minority-owned concerns. Of course, in many instances there are legitimate reasons for joint ventures; clearly, White and minority enterprises can team up to acquire business that neither could acquire alone. But civil right groups and minority business owners have complained to Congress about minorities being set up as "fronts" with White backing, rather than being accepted as full partners in legitimate joint ventures. Third, a minority enterprise that secures the business of one large corporate customer often runs the danger of becoming and remaining dependent. Even in the best of circumstances, fierce competition from larger, more established companies makes it difficult for small concerns to broaden their customer bases; when such firms have nearly guaranteed orders from a single corporate benefactor, they may truly have to struggle against complacency arising from their current success.Notes:civil rights activists 公民权利激进分子Hispanics 西班牙后裔美国人sizable orders 大额订单subcontract 转包合同on forms filed with the government 在政府存档备案percentage goals 指标apportionment 分配，分派public works 市政工程letup 减弱，缓和promising as it is... 这是as引导的上步状语从句，表语倒装了patronage 优惠concern n. 公司and the like 以及诸如此类的crippling fixed expenses 引起损失的固定开支the world of 大量的bid 投标to cash in on ...靠......赚钱team up 一起工作, 合作"fronts" 此处意为"摆门面"Complacency 自满The text suggests that the failure of a large business to have its bids for subcontracts result quickly in orders might cause it to
A. experience frustration but not serious financial harm.
B. have to record its efforts on forms filed with the government.
C. increase its spending with minority subcontractors.
D. revise its procedure for making bids for federal contracts and subcontracts.
[多选题]由于基础问题引起的事故，处理起来（ ）。
A.危险性高
B.耗时长
C.难度大
D.经济损失多
[单项选择]
Assuming that a constant travel-time budget, geographic constraints and short-term infrastructure constraints persist as fundamental features of global mobility, what long-term results can one expect7 In high-income regions, (41) North America, our picture suggests that the share of traffic (42) sup plied by buses and automobiles will decline as high-speed transport rises sharply. In developing countries, we (43) the strongest increase to be in the shares first for buses and later for automobiles. Glob ally, these (44) in bus and automobile transport are partially offsetting. In all regions, the share of low-speed rail transport will probably continue its strongly (45) decline.
We expect that throughout the period 1990—2050, the (46) North American will continue to de vote most of his or her 1. 1-hour travel-time (47) to automobile travel. The very large demand (48) air travel (or high-speed rai
A. outcomes
B. trends
C. declines
D. impacts
[多项选择]接地选线装置反应中性点不接地系统接地故障，采用的原理有（）。
A. 基于零序电流大小选出故障线路
B. 基于零序功率选出故障线路
C. 基于零序电压大小选出故障线路
[单选题]营养性缺铁性贫血患儿最适合的治疗应是（）
A.餐前服用富马酸铁
B.餐后服用硫酸亚铁及B族维生素
C.反复多次少量输血及硫酸亚铁
D.肌注左旋糖酐铁及维生素C口服
E.餐间服用硫酸亚铁及维生素C
[判断题]企业对固定资产进行更新改造时，应当将该固定资产账面价值转入在建工程，并在此基础上核算经更新改造后的固定资产原价。（）
[判断题]QDII的含义是合格境外机构投资者。 ( )
[单选题]64D型半自动闭塞中，轨道继电器GDJ采用的型号是（ ）。
A.JWXC-1700
B.JPXC-1000
C.JZXC-480
D.JWXC-H340
[单项选择]我国最早主张"以美育代宗教"的教育家是（）。
A. 陶行知
B. 徐特立
C. 杨贤江
D. 蔡元培
[单项选择]先天性甲状腺功能减退症最大的危害是造成（）
A. 运动功能发育迟缓
B. 生理功能低下
C. 消化功能低下
D. 智力发育低下
E. 造血功能低下
[填空题]培养液在培养期间温度须控制在 ( )之间。
[单选题]小明是某高校计算机系的大学生，平时爱好研究黑客技术，为了试验自己的技术，小明入侵了学校的网站后台但并未实施任何操作，小明的行为属于 。
A.违法行为
B.只是看看，没有操作，所以没关系
C.锻炼自己的学习成果，应提倡
D.证明自身技术水平高超，应予鼓励
[判断题]摄像机操作基本要求 ：“平”——镜头画面的地平线要保持水平，调平三角架，手持肩扛时观察寻像器和垂直线条。 “稳”——保持画面稳定，不晃动。 “准”——运动画面的落幅准 “匀”——运动的画面在运动过程中速度均匀一致，不能忽快忽慢。
A.正确
B.错误
[判断题]纳入月度施工计划的施工项目原则上不准停止施工，因专特运等原因需停止施工时，须经分管运输副总经理(总调度长)批准，原则上于前日１４:００前以调度命令通知有关单位。
A.正确
B.错误
[判断题]列车运行速度大于160 km/h线路上的道岔，密贴段牵引点处有4mm及其以上间隙时，道岔不能锁闭和接通道岔表示；两牵引点间有5 mm 及其以上间隙时，道岔不能接通表示。（ ）
A.正确
B.错误
[单选题] 保密行政管理部门可以提请公安、工商行政管理等有关部门协助（ ）非法获取、持有的国家秘密载体。
A.收缴
B.没收
C.销毁
D.拦截
[单选题]492抽油机井供液能力变差时，动液面()。
A.(A)上升
B.(B)下降
C.(C)不变
D.(D)先升后降
[单项选择]先天性巨结肠行钡灌肠检查时，操作错误的是（ ）
A. 钡灌注量不宜过多
B. 灌肠时压力不宜过大
C. 检查完毕最好抽出钡剂
D. 肛管不宜放置过高
E. 先用肥皂水清洁灌肠
[简答题]中压架空线路分段、分支及联络点一般如何配置？
[单项选择]目前，综合布线领域广泛遵循的标准是（）
A. GB/T 50311—2000
B. TIA/EIA 568 D
C. TIA/EIA 568 A
D. TIA/EIA 570
[判断题]治安管理处罚中，处罚是目的，教育是手段。( )
[判断题]配电网通信系统中，FTU站点ONU设备的电源最终来自于PT。
A.正确
B.错误
[判断题]作业人员具备必要的安全生产知识，学会紧急救护法，特别要学会触电急救。
A.正确
B.错误
