热门试题:
[单选题]超声雾化吸入器水温超过多少需要调换:
A.30℃
B.40℃
C.50℃
D.60℃
[单选题]下列选项中，制动形式不包括（）。
A.常用制动
B.紧急制动
C.进站制动
D.停放制动
[单选题]以两个互相垂直的平面为基准时，划线前应先将两个( )的平面加工好 。
A.平行
B.倾斜
C.垂直
D.对称
[单选题]柱上断路器主回路直流电阻试验数据与初始值相差大于等于( )％属于一般缺陷。
A.10
B.20
C.30
D.40
[单选题] 办事公道是指职业人员在进行职业活动时要做到( )。
A.原则至上,不徇私情,举贤任能,不避亲疏
B.奉献社会,襟怀坦荡,待人热情,勤俭持家
C.支持真理,公私分明,公平公正,光明磊落
D.牺牲自我,助人为乐,邻里和睦,正大光明
[单选题]工作许可时，工作票一份由工作负责人收执，其余留存于（）处。
A.工作票签发人或专责监护人
B.工作票签发人或工作许可人
C.工作许可人或用户负责人
D.工作许可人或专责监护人
[多选题]架空线路施工工序有（ ）。
A.A-基础施工
B.B-接地工程
C.C-杆塔组立
D.D-材料运输
E.E-架线
F.F-竣工验收
G.G-编写施工方案
[单选题]关于孳息的表述正确的是（ ）。
A.在一物之上设定了用益物权的，该物产生的天然孳息，除当事人另有约定外，由所有权人取得
B.法定孳息按约定取得
C.法定孳息没有约定或约定不明确的，由所有权人取得
D.存款取得的利息是天然孳息
[单选题]钢中的有害气体主要是指（ ）。
A.氢氧
B.氮氩
C.氢氮
D.氮氧
[判断题]县级以上的法院设立赔偿委员会。()
A.正确
B.错误
[多选题]社会化消防宣传的特点有( )
A.传播的时效性
B.对象的针对性
C.内容的实效性
D.主体的广泛性
[单项选择]伊瑟尔认为，文学文本最根本的结构特征是______
A. 应答性
B. 召唤性
C. 召回性
D. 回应性
[单选题]检验镗轴轴线对前立柱导轨的垂直度时，应将镗轴( )。
A.缩回
B.全部伸出
C.伸出一半
D.伸出规定长度
[单项选择]光与影有着和谐的旋律，如梵婀玲上奏着的名曲。这种“有色听觉”是（）。
A. 联觉
B. 后像
C. 感觉适应
D. 感觉对比
[简答题]苯类发生小型火灾时，可用的灭火器材和物资有哪些？
[单项选择]50岁妇女普查时发现子宫增大如6周妊娠大小，B超检查确诊为子宫肌瘤，最好的处理方案是( )。
A. 子宫全切
B. 子宫颈全切
C. 定期复查
D. 雌激素治疗
E. 孕激素治疗
[填空题]RNA.是由( )四种基本碱基排列组合而成。
[单项选择]导向定位基准面应有（）个支撑点数。
A. 1
B. 2
C. 3
D. 4
[不定项选择题]共用题干
第一篇
How the First Stars in the Universe Came into Existence
Researchers believe that our universe began with the Big Bang（宇宙大爆炸）about 13 billion years
ago,and that soon after that event,matter began to form as small dust grains and gases.How the first stars
formed from this dust and gas has been a burning question for years,but a state-of-the-art computer simula-
tion now offers the most detailed picture yet of how these first stars in the universe came into existence.
The composition of the early universe was quite different from that of today,and the physics that
governed the early universe were also somewhat simpler. Dr. Naoki Yoshida and colleagues in Japan and the
U.S.incorporated these conditions of the early universe,sometimes referred to as the"cosmic dark ages",to
simulate the formation of an astronomical object that would eventually shine its light into this darkness.
The result is a detailed description of the formation of a protostar（原恒星）一the early stage of a mas-
sive primordial（原始的）star of our universe , and the researchers ' computer simulation , which has been
called a"cosmic Rosetta Stone"sets the bar for further investigation into the star formation process.The ques-
tion of how the first stars evolved is so important because their formations and eventual explosions provided
the seeds for subsequent stars to come into being.
According to their simulation,gravity acted on minute density variations in matter,gases,and the myste-
riou;"dark matter"of the universe after the Big Bang in order to form this early stage of a star一a protostar
with a mass of just one percent of our sun. The simulation reveals how pre-stellar（前恒星的）gases would
have actually evolved under the simpler physics of the early universe to form this protostar.
Dr. Yoshida's simulation also shows that the protostar would likely evolve into a massive star capable of
synthesizing（合成）heavy elements,not just in later generations of stars,but soon after the Big Bang.
"This general picture of star formation,and the ability to compare how stellar objects form in different
time periods and regions of the universe,will eventually allow investigation into the origins of life and
planets,"said Lars Herriquist,a professor of Astronomy at Harvard University and a co-author of this latest
report."The abundance of elements in the universe has increased as stars have accumulated,"he says,"and
the formation and destruction of stars continues to spread these elements further across the universe.So all of
the elements in our bOdies originally formed from nuclear reactions in the centers of stars,long ago."
Their simulation of the birth of a protostar in the early universe signifies a key step toward the ambitious
goal of piecing together the formation of an entire primordial star and of predicting the mass and properties of
these first stars of the universe.More powerful computers,more physical data,and an even larger range will
be needed for further calculations and simulations,but these researchers hope to eventually extend this simu-
lation to the point of nuclear reaction initiation一when a stellar object becomes a true star.
"Dr. Yoshida has taken the study of primordial star formation to a new level with this simulation,but it
still gets us only to the halfway point towards our final goal.It is like laying the foundation of a skyscraper,"
said Volker Bromm,assistant professor of Astronomy at the University of Texas, Austin and the author of a
companion article."We must continue our studies in this area to understand how the initially tiny protostar
grows,layer by layer,to eventually form a massive star. But here,the physics become much more complicated
and even more computational resources are needed."
According to Paragraph 4,which of the following is NOT true about a protostar?
A.It developed into a massive star during the Big Bang.
B.It evolved from pre-stellar gases.
C.It was able to integrate heavy elements when evolving into a massive star.
D.It had a mass of one percent of the sun.
[单选题] 下列刑罚中属于主刑的是()。
A. 罚金
B. 没收财产
C. 驱逐出境
D. 拘役
[单选题] 安全作业标设置在装卸线的分段绝缘器内侧 ( ) 处，各工区做好对安全作业标的检查维护工作。
A. 1m
B. 2m
C. 3m
D. 4m
[多选题]吴某因与同事王某有过节,便带人到所在单位准备殴打王某。王某不在,吴某看见另一同事刘某(正在上班),因为平时看不惯刘某,即对刘某进行殴打。在殴打刘某的过程中,同事张某正好在接电话,吴某误以为张某在报警,即与带来的几个人一起将张某带上出租车开到离单位4公里以外的桥头才让其离开,时间持续半个多小时。下列说法正确的是()。
A.吴某因看不惯刘某,对刘某进行殴打,虽有明确的殴打对象,但属于随意殴打他人行为,带有无理取闹、流氓的性质,应定性为寻衅滋事
B.吴某的行为构成寻衅滋事罪
C.吴某对张某的行为构成非法限制人身自由
D.对吴某应当以寻衅滋事和非法限制人身自由依照《治安管理处罚法》的规定分别决定,合并执行
[单选题]下列各项中，不属于急性肾小球肾炎临床特征的是
A.多数患者都有血尿
B.病程早期常有高血压
C.部分病例可出现急性肾功能不全
D.血压急剧升高时可出现高血压脑病
E.浮肿为可凹性、上行性
[单项选择]下列涎腺肿瘤中，最易沿神经扩散的是（）。
A. 混合瘤
B. 黏液表皮样癌
C. 腺泡细胞癌
D. 腺样囊性癌
[不定项选择题]心房颤动引起的常见卒中类型是（ ）。
A.分水岭脑梗死
B.短暂性脑缺血发作
C.脑栓塞
D.脑血栓
E.腔隙性脑梗死
[多项选择]以下关于牙体缺损修复中增加患牙抗力的措施，正确的是（）
A. 尽量保留牙体硬组织
B. 嵌体洞斜面
C. 高嵌体
D. 去除薄壁弱尖
E. 进行预防性扩展
[单选题]电气化铁路上的施工和作业，均须按（ ）要求办理各项手续。
A.带电
B.停电
C.随意
D.以上都不是
[单选题]结束作业时，下道后的小型养路机械必须采取（ ），并加锁固定，下道架不得向线路方向倾斜。
A.保养措施
B.隔离措施
C.布罩措施
D.防溜措施
[判断题]持用他人登轮证件或者涂改登轮证件企图登轮，或者将登轮证件转让他人使用的，可处以警告或者100元至300元罚款。
[填空题]提倡______，可以在不增加总课时的前提下，压缩教学内容，削减教学时数，可相应地增加课程的门数。
[判断题]排出缓冲罐的作用是减小吸入管路流量不均匀度，减小惯性损失，提高泵的吸入性能。
[单项选择]On Mar. 14, when Wal-Mart Stores Inc. announced its first foray into Japan, the Bentonville (Ark.) retailing giant placed a big bet that it could succeed where countless other foreign companies have failed. In the past five years, a number of famous Western brands have been forced to close up shop after failing to catch on in Japan, one of the world’s largest--but most variable--consumer markets.
May Wal-Mart make a go of it where others have stumbled One good sign is that the mass marketer is not rushing in blindly. It has taken an initial 6.1% stake in ailing food-and-clothing chain Seiyu Ltd. , which it can raise to a controlling 33.4% by yearend and to 66.7% by 2007. That gives Wal-Mart time to revise its strategy--or run for the exits.
The question is whether Wal-Mart can apply the lessons it has learned in other parts of Asia to Japan. This, after all, is a nation of notoriously finicky consumers--who have become even more so since Japan slipped into a decade-lon
A. optimistic.
B. objective.
C. pessimistic.
D. defensive.
[多项选择]对新办纳税人培训辅导的内容主要有（）。
A. 税收基本知识、相关税收政策
B. 办税流程、软件操作
C. 税控设备操作
D. 行政复议、行政诉讼等相关法律
