热门试题:
[单选题]根据《标准施工招标文件》,下列事件中,既可索赔工期又可索赔费用的是( )。
A.发包人要求承包人提前竣工
B.发包人要求向承包人提前交付工程设备
C.承包人遇到不利物质条件
D.承包人遇到异常恶劣的气候条件
[单项选择]男,40岁,反复饥饿性上腹痛8年;多次胃镜检查诊断为十二指肠溃疡。此病人溃疡病反复发作与下列哪种细菌有关()。
A. 大肠杆菌
B. 幽门螺杆菌
C. 链球菌
D. 空肠弯曲菌
E. 葡萄球菌
[简答题]HXD3电力机车车顶设备由哪些部件组成?
[判断题]副车架是装在汽车底盘大梁上的附加车架,其作用一是布置和承载上车全部构件,二是在作业时起支撑作用。(易)( )
A.正确
B.错误
[单选题]只要根据需要编制程序并输入计算机,计算机就可以完成预定任务,这是因为计算机具有______。
A. 高速运算能力
B. 逻辑判断能力
C. 很高的计算精度
D. 自动控制能力
[填空题]圆曲线和缓和曲线始终点标,设在()各点处,标明所向方向为直线、圆曲线或缓和曲线。
[单项选择]人工牙(塑料牙)脱落的主要原因中,不包括
A. 咬硬物
B. 冲蜡时,塑料牙盖嵴部的蜡没有冲干净
C. 排牙时,塑料牙盖嵴部没有磨去光亮层
D. 义齿跌破
E. 塑料牙颈部塑料包裹太少
[单选题] 定时链路的日常维护主要是在不中断业务的条件下,利用()的监测功能。 (2分) 查看答案
A.全国基准时钟设备(PR
B.区域基准时钟设备(LPR)
C.综合定时供给设备(BITS)
D.铯钟和卫星接收设备
[单选题]B类火灾是指( )引起的火灾。
A.可燃固体
B.可燃液体
C.可燃气体
D.核物质
[判断题]空气呼吸器包括面罩总成、供气阀总成、气瓶总成、减压器总成、背托总成等五个部件。( )
A.正确
B.错误
[判断题]依法不具有独立执法主体资格的公安机关内设机构,使用文书时应当以其所属公安机关的名义,所使用的文书应当印制其所属公安机关的名称。
A.正确
B.错误
[单选题]现行客货车制动缸活塞密封件为( )。
A.O形密封环
B.金属密封环
C.密封牛皮碗
D.密封橡胶碗
[不定项选择题]A.腺癌
A.鳞状细胞癌
B.印戒细胞癌
C.黏液腺癌
D.髓样癌
E.女性的肺癌大多是
[多选题]关于行政复议机关作出的变更决定,下列哪些选项是正确的?( )
A.变更决定只能适用于行政处罚显失公正
B.变更决定与撤销决定的条件相同
C.责令重新作出具体行政行为不适用于作出变更决定的情况下
D.变更决定可以适用于被申请人不履行行政复议过程中的法定义务
[单选题]重量的工程制单位是( )。
A.g
B.mg
C.kg
D.kgf
[多选题]工作许可后,工作负责人、专责监护人应向工作班成员交待(),告知危险点,并履行签名确认手续,方可下达开始工作的命令。
A.现场电气设备接线情况
B.工作内容
C.人员分工
D.带电部位
E.现场安全措施
[单选题]霍尔元件不等位电势产生的主要原因不包括( )
A..霍尔电极安装位置不对称或不在同一等电位上
B..半导体材料不均匀造成电阻率不均匀或几何尺寸不均匀
C..周围环境温度变化
D..激励电极接触不良造成激励电流不均匀分配
[多选题]CRH5A型动车组正常状态下手动开启塞拉门,会用到( )。
A.紧急解锁三角锁
B.紧急解锁按钮
C.红色紧急解锁手柄
D.绿色开门按钮
[单选题]电能表常数的正确单位是( )
A.度/小时
B.r/kWh
C.R/kWh
D.度/kWh
[判断题] 机械产生的噪声能使操作者的知觉和听觉麻痹,导致不易判断或判断错误。
A.正确
B.错误
[单选题]直流伺服电动机在自动控制系统中用作( )。
A.放大元件
B.测量元件
C.执行元件
[单项选择]
Brighton is a popular seaside town on the south coast of England. Not long ago, some policemen were very (21) . There (22) several serious accidents (23) by motorists driving too fast. The police started to set up a speed trap(速度监视器). They measured (24) of 88 yards on a straight road and watched to see (25) a car took to (26) that far. They knew that if a car took six seconds, it was traveling faster (27) the (28) limit of 30 miles an hour.
When the policemen were ready, they did (29) a hedge(树篱) and started to (30) passing cars. During their first half an hour, they caught five drivers. The policemen wrote down the (31) of each car and the name and address of the (32) . But for the next half an hour the policemen didn’t see anybody (33) too fast. They thought that this was very (34) . One of them drove a quarter of a mile along the road and saw two students (35) A. catch
B. to catch
C. catching
D. caught
[判断题]生产经营单位主要负责人有责任组织制定本单位安全生产规章制度和操作规程。
A.正确
B.错误
[填空题]()、重大灾害事故应急救援、()和重大突发事件处置等联合作战行动中的思想政治教育,由()结合实际有针对性地组织进行。
[判断题]偿付比例反映了客户综合还债能力的高低,并有助于判断客户面临破产的可能性,因此偿付比例越高越好。( )
[多选题]皮带机检修时()
A.A、必须先停机 ;#B、必须将控制开关停电挂牌 ;#C、必须松开张紧
[判断题]集中告警系统可以查看并测试通信各子系统网管设备与集中告警设备之间的连接状态。( )
A.正确
B.错误
[判断题]根据《工伤保险条例》的规定,职工或者其近亲属认为是工伤,用人单位不认为是工伤的,由用人单位承担举证责任。
A.正确
B.错误
[单项选择]骨盆自肠间隙脓肿的特点是
A. 属于慢性化脓性感染.
B. 肛周红、肿、热、痛明显
C. 在直肠肛管周围脓肿中最多见
D. 可有直肠坠胀感,便意不尽
E. 全身感染中毒症状不明显
[单选题]一卡通充值凭条打印说法正确的是( )。
A.乘客不需要凭条则可以不打印
B.打印出一联充值凭证车站留存
C.打印出一联交客户
D.打印出两联充值凭证,一联交给客户核对,一联车站留存
[单选题]在道岔上,支距的临时补修静态几何不平顺容许偏差管理值为()mm。
A.0
B.2
C.3
D.4
[单项选择]样本相关系数r的取值范围是
A. r可取任意实数
B. r≥0
C. [0,1]
D. [-1,1]
E. (-1,1)
[单项选择]Questions 51 to 55 are based on the following passage.
The image most people have of President Abraham Lincoln is of a tall, thin, bearded man. Before he was elected President, however, Lincoln did not wear a beard. He grew his beard as the result of a letter he received from an eleven-year-old girl!
In 1860, a clean-shaven Lincoln was running for the presidency. Grace Bedell of Westfield, New York, admired Lincoln very much, but she didn’t like the way he looked. Afraid that he might not win the election, Grace wrote him a letter stating that if Lincoln grew a beard, “You would look a great deal better for your face is so thin.”
Lincoln wrote back to Grace, saying that if he started growing whiskers now, people might think it was a silly affectation done on purpose. The beardless Lincoln won the election—and he began to grow a beard shortly afterward! The next year, Lincoln visited Grace Bedell’s hometown and told the citizens that he had grown a beard because of a girl fro
A. Before Abraham Lincoln was elected President, he did not have a smile.
B. Before Abraham Lincoln was elected President, he did not look well.
C. Before Abraham Lincoln was elected President, he did not have a beard.
D. Before Abraham Lincoln was elected President, he did not look thin.
[单项选择]关于T细胞表位和B细胞表位描述正确的是
A. T细胞表位只位于抗原分子表面
B. B细胞表位多位于抗原分子表面
C. T细胞表位有构象表位和线性表位两种
D. B细胞表位只有构象表位
E. B细胞表位需要MHC分子递呈
[单选题]核放射探测仪测量范围( )(难)
A. 0.001~50mR/h;0~50000CPM
B. 0.01~5mR/h;0~5000CPM
C. 0.1~50mR/h;0~500CPM
D. 1~50mR/h;0~50000CPM
[单选题]无缝线路工地焊接,铝热焊缝距轨枕边缘不应小于( )。
A.30mm
B.40mm
C.50mm
D.60mm
[单选题]下列关于铝合金分类和特性的说法中正确的是( )。
A.铝合金可以按合金元素分为二元、三元和多元合金
B.建筑装饰工程中常用铸造铝合金
C.各种变形铝合金的牌号分别用汉语拼音字母和顺序号表示,其中,顺序号可以直接表示合金元素的含量
D.常用的硬铝有11个牌号,LY12是硬铝的典型产品