热门试题:
[单选题]在锁定轨温范围内铺设时，限位器要求居中，焊联前测量，尖轨限位器两侧间隙值允许偏差（）mm。
A.±0.5mm
B.±1.0mm
C.±1.5mm
D.±2mm
[单选题] 下列叙述中,错误的是( )。
A. 硬盘在主机箱内,它是主机的组成部分
B. 硬盘属于外部存储器
C. 硬盘驱动器既可做输入设备又可做输出设备用
D. 硬盘与CPU之间不能直接交换数据
[单选题]菜肴命名最好不要超过的字数是( )。
A.4 个字
B.5 个字
C.6 个字
D.7 个字
[单项选择]蒙古族忌食（）
A. 虾、蟹、鱼
B. 狗肉
C. 坨坨肉
D. 羊肉
[判断题]雨天在户外操作电气设备时，操作杆的绝缘部分应有防雨罩或使用带绝缘子的操作杆。
A.正确
B.错误
[单项选择]按照传输方法的不同，总线可以分为( )。
A. 单工总线，双工总线
B. 并行总线，串行总线
C. 单工总线，双工总线，全双工总线
D. 内部总线，外部总线
[单选题]月表检修日和年表月份工作计划一经确定，不得随意更改。特殊情况确需变更的，月表检修日变动( ) 日（含）以内时由工长批准。
A.1
B.3
C.5
D.7
[单选题]圬工梁梁体保护层脱落，已危及桥下行人及交通安全时，评定为（）劣化。
A.A级AA等
B.A级A1等
C.B级
D.C级
[判断题]大型养路机械在封锁区间独自运行时，续行间隔不得少于300 m,续行速度不得超过40km/h,并做好随时停车的准备。
A.正确
B.错误
[不定项选择题]风险辨识的时机（ ）。
A.开通试运营前
B.定期开展
C.新的生产活动出现前
D.新改扩工程实施、投用前
E.事故发生之后
[单选题]以下哪种情形，行政机关应当及时作出解除冻结决定（ ）。
A.当事人有明显违法行为,
B.冻结的存款、汇款与违法行为有直接联系,
C.在冻结期限中,
D.其他不再需要采取冻结措施的情形
[填空题]社会工作职业化是社会工作变为一种职业的过程，它强调的是（）。
[填空题]主要成分以“( )”(含量大于或等于40 %)表示,其余成分视含量多少。
[单项选择]2009年是五四运动90周年，五四运动不仅凝聚起近代中国思想变革的风云，而且酝酿着更大跨度的历史变革，是民主主义革命史上的里程碑。使五四运动具有如此重要地位的因素是（）
A. 它使中国民主革命的性质发生了根本变化
B. 它直接促进了中国共产党的成立
C. 它促进了国共两党的合作，使北伐战争顺利进行
D. 它推动了中华民族团结抗日局面的形成
[判断题]加强生产设备的管理，防止毒物的跑、冒、滴、漏污染环境.属职业病一级预防治即“病因预防”.
A.正确
B.错误
[单项选择]小明有5盒奶糖，小强有4盒巧克力，共值44元。如果他们对换一盒，则各人手中的东西价值相等，那么一盒巧克力价值（）元。
A. 4
B. 5
C. 6
D. 8
[单项选择]According to the passage, if you suffer from hypochondria, ______.
A. you must be a medical student, or a medical worker
B. you are haunted by a possibly inexistent disease
C. you will never get rid of this disease
D. you always tell funny stories at dinner parties
[单项选择]血管、淋巴管内表面属于（ ）
A. 上皮组织
B. 致密结缔组织
C. 肌肉组织
D. 疏松结缔组织
[判断题]脱卸防化服前要彻底洗消，脱卸过程中不得直接接触防化服外表面。
A.正确
B.错误
[单选题]区段处于封锁（SPKS激活）状态时，其在2号线ATS站场图中的显示为（）。（ ）
A.A、黄色包络线
B.B、蓝色包络线
C.C、红色包络线
D.D、灰色包络线
[单选题]国家综合性消防救援队伍的退休人员，参加国家和国家综合性消防救援队伍组织的重大纪念、庆典活动，通常着______。
A.便服
B.制式服装
C.都可以
D.礼服
[不定项选择题]共用题干
U. S. Scientists Confirm Water on Mars
NASA scientists said that Mars was covered once by vast lakes,flowing rivers and a Va-riety of other wet environments that had the potential to support life.
Laboratory tests aboard NASA's Phoenix Mars Lander have identified water in a soil sample;the lander's robotic arm delivered the sample Wednesday to an instrument that iden-tifies vapors produced by the heating of samples.
“We have water,”said William Boynton of the University of Arizona,lead scientist for ,the Thermal and Evolved-Gas Analyzer,or TEG
A.“This is the first time Martian water has been touched and tasted.”
The robotic arm is a critical part of the Phoenix Mars mission. It is needed to trench into the icy layers of northern polar Mars and deliver samples to instruments that will analyze what Mars is made of,what its water is like,and whether it is or has ever been a possible habitat for life.
The soil sample came from a trench approximately 2 inches deep.When the robotic arm first reached that depth,it hit a hard layer of frozen soil.Two attempts to deliver samples of icy soil on days when fresh material was exposed were foiled when the samples became stuck inside the scoop.Most of the material in Wednesday's sample had been exposed to the air for two days,letting some of the water in the sample vaporize away and making the soil easier to handle.
“Mars is giving us some surprises,”said Phoenix principal investigator Peter Smith of the University of Arizona.“We're excited because surprises are where discoveries come from. One surprise is how the soil is behaving. The ice-rich layers stick to the scoop when poised in the sun above the deck,different from what we expected,from all the Mars simulation tes-ting we've done so far.”
Since landing on May 25,Phoenix has been studying soil with a chemistry lab,TEGA, a microscope,a conductivity probe and cameras.The science team is trying to determine whether the water ice ever thaws enough to be available for biology and if carbon-containing chemicals and other raw materials for life are present.
The mission is examining the sky as well as the ground. A Canadian instrument is using a laser beam to study dust and clouds overhead.
“It's a 30-watt light bulb giving us a laser show on Mars,”said Victoria Hipkin of the Canadian Space Agency.
A full-circle,color panorama of Phoenix's surroundings also has been completed by the spacecraft.
“The details and patterns we see in the ground show an ice-dominated terrain as far as the eye can see,”said Mark Lemmon of Texas A & M University,lead scientist for
Phoenix's Surface Stereo Imager camera.“They help us plan measurements we're making within reach of the robotic arm and interpret those measurements on a wider scale.”
Where are the scientists involved in the research from?
A.They are from America.
B.They are from Canada.
C.They are from both America and Canada.
D.They are from neither America nor Canada.
[单项选择]（）是相对清洁的化石能源。
A. 煤炭
B. 石油
C. 天然气
D. 沼气
[单项选择]持续改进中的“改进”是指产品质量、过程及体系（）和效率的提高。
A. 科学性
B. 适用性
C. 合理性
D. 有效性
[判断题]生效的仲裁裁决，不可以向人民法院申请强制执行。（ ）
A.正确
B.错误
[判断题]当事人陈述、申辩时提出新的证据,行政机关可能酌情采纳。( )
A.正确
B.错误
[判断题]行政复议机关应当自收到申请之日起60日内作出行政复议决定,但是法律规定的行政复议期限少于60日的除外。
A.正确
B.错误
[单选题]麻黄绒蜜炙后的主要作用是
A.增强补中益气作用
B.缓和药性
C.增强润肺止咳作用
D.矫味、消除副作用
E.长于泻火解毒、化痰止咳
[单项选择]“十一五”期间，我们需要优化发展能源工业，做到构筑( )的能源供应体系。
A. 经济、清洁、安全、稳定
B. 科学、经济、安全、稳定
C. 科学、先进、清洁、稳定
D. 科学、及时、经济、安全
[判断题]人行过道是指在铁路线路上铺面宽度不足2.5米，与道路贯通的平面交叉。
A.正确
B.错误
[单选题]蓄电池没电无法启车应操作（ ）。
A.A、SIV启动
B.B、蓄电池投入
C.C、高压应急启动（
D.D
