热门试题:
[单项选择]When the end of the world comes, we’ll know what to blame. Scientists have found compelling evidence that the Sun has a baby brother, a dark star whose eccentric orbit is responsible for periodically showering the Earth with comets and meteorites.
The dark star -- named Nemesis by astronomers -- is thought to be a brown dwarf that spins round the Sun in an orbit so large it is measured in light years, the distance light travels in a year, equivalent to about 6,000 billion miles.
The research suggests that, every 26m years, the star’s eccentric orbit brings it within one light year of the solar system. There it causes havoc in the Oort Cloud, a huge region surrounding the solar system that contains billions of bits of cosmic rabble left over from the formation of planets.
Of the millions of rocks it throws out of orbit at each visit, some hurtle Earthwards, and have several times nearly wiped out life on Earth.
Astronomers have long wondered if the Sun has a smaller
A. Brown Dwarf Orbits around the Earth
B. Sun’s Hidden Twin Stalks Earth
C. Oort Cloud and Comet Shower
D. Star, Planet and Dwarf
[单选题]生理性胃食管反流消失的年龄是( )
A.2~3 个月
B.5~6 个月
C.8~10 个月
D.12~14 个月
E.18~24 个月
[单选题]人民行使国家权力的机关是( )。
A.全国人民代表大会和地方各级人民代表大会
B.各级人民政府
C.国家行政机关
D.国家司法机关
[单选题]用锯轨机切割钢轨时,其他人员应远离锯轨机( ),防止锯片破碎伤人。
A.左侧
B.前方
C.两侧和前方
D.左侧和前方
[单选题]一般地区±400kV电压等级导线的边线保护区范围为（ ）m
A.20
B.25
C.30
D.40
[单项选择]与简单之债对应的是( )。
A. 复杂之债
B. 连带之债
C. 种类之债
D. 选择之债
[填空题] Knowledge may be acquired through conversation, watching television or traveling, but the deepest and most (36)_________ way is through reading. If we consider the (37)_________ population of the world, we may conclude that a few spend their whole lives on academic reading; many read something light for (38)_________, and a few dip into something more serious now and then; while very many men, women and children never advance (39)_________the sports page of a newspaper, a fashion article or the (40)_________.
If you have learnt to love books as a child, the reading habit will never (41)_________you. But if this has not been your good (42)_________, you tend to think of reading as a bore. A few, but very few, come to the habit late in life. In order to (43) _________ to read one must be curious. (44) __________________. But many fail to do so either because of an over-strict system where what is most important is memory work or because of a careless and lazy one where even the
[单选题]螺纹的公称直径是螺纹的（ ）。
A.大径
B.大径的基本尺寸
C.顶径
[判断题]填写现金缴款单时,1409.50元,应写成“壹仟肆佰零拾玖元伍角”( )。
A.正确
B.错误
[单项选择]
Passage One
Fifty years ago, most people lived in rural areas. But the world has changed. In the near future, more than half of all people will live in cities for the first time in history.
City life is not always a bad thing, but many experts worry about this process of urbanization (城市化 ). A new report says that process is having a huge effect on human health and the quality of the environment. Of the three billion people who live in cities now, the report says, about one billion live in unplanned settlements. These are areas of poverty, slums that generally lack basic services like clean water, or even permanent housing. More than 60 million people are added to cities and surrounding areas each year, mostly in slums in developing countries. The international community has been too slow to recognize the growth of urban poverty. Policy makers need to increase investments in education, health care and other areas.
The report talks about some success
A. economy
B. the growth of poverty in cities
C. education
D. health care
[单选题]雷达管制员在( )向航空器通报位置。
A. 航空器第一次被识别时或雷达服务终止时
B. 航空器雷达引导后,恢复自主领航时或航空器有要求时
C. 航空器报告的位置与雷达探测的位置有显著差别时
D.A.,B和C
[判断题]对于转子有绕组的电动机将外电阻串入转子电路中启动,并随电机转速升高而逐渐地将电阻值减小并最终切除叫转子串电阻启动。( )
A.正确
B.错误
[单项选择]劳动教养是( )的方法。
A. 处理敌我矛盾
B. 惩罚不道德行为
C. 惩罚犯罪
D. 处理人民内部矛盾
[判断题]( )《幼儿园工作规程》中明确规定：“要保证幼儿有充足的户外活动时间和游戏时间。全日制幼儿园每日不得少于1小时，寄宿制幼儿园每日不得少于2小时”。
A.正确
B.错误
[多项选择]患者男，68岁，因“胸骨后烧灼感4年余，吞咽困难10个月”来诊。查体：未见异常。既往无特殊病史。结合该病例，叙述正确的有（提示入院后第1天行放射线检查，造影示食管下段黏膜粗糙，管腔狭窄，管壁僵硬。）（）
A. 应进一步进行内镜检查
B. 可以除外食管裂孔疝的诊断
C. 上腹加压钡餐造影检查
D. 详细询问患者病史及既往用药情况
E. 尚不能除外食管裂孔疝的诊断
F. 可以通过食管测压明确诊断
[单选题]下列行为或者认识中，对保持身心健康没有好处的是（ ）。
A.积极参加集体活动
B.我行我素，只要开心，无论何事想做就做
C.听心理讲座，阅读心理类书籍
D.积极参加体育锻炼
[单选题]利用使着火物与火源隔离的原理，用难燃或不燃物体遮盖受火势威胁的可燃物质等，这样的灭火方法称之为（ ）。
A.A.冷却法
B.B.窒息法
C.C.隔离法
D.D.抑制法
[单选题]在平日，天文学是一门比较专业的学科，然而近几年来每逢罕见天文现象上演，都会成为公众关注的一大热点。其实不管日全食还是金星凌日，其观测对于科学研究的意义，已随着天文学设备和理论的不断完善而日趋削弱，相反，其科普意义愈发令人关注，也令天文“流行”起来。对这段文字理解正确的一项是( )
A.天文学的专业性使其很难成为一种流行学科
B.“天文热”的出现具有一定的偶然性，不会持久
C.罕见天文现象观测的科普意义正受到更多的关注
D.天文学理论的不断完善使天文观测的科学价值日趋削弱
[单选题]ZPML-A系列曳引机编码器安装轴同轴度要求:( )
A.0.03mm以内;
B.0.05mm以内;
C.0.07mm以内;
D.0.10mm以内。
[单项选择]
斜管微压计的特点是（）。
Ⅰ．专供测流体压差较小的仪表；
Ⅱ．灵敏度较低；
Ⅲ．精度较高。
A. Ⅰ+Ⅱ
B. Ⅰ+Ⅲ
C. Ⅱ+Ⅲ
D. Ⅰ+Ⅱ+Ⅲ
[单选题]断层的倾角表明断层的（ ）。
A.倾向
B.走向
C.倾斜程度
D.方位
[不定项选择]学习策略的训练要遵循的原则有（ ）
A. 内化性原则
B. 理论联系实际原则
C. 特定性原则
D. 生成性原则
[单选题]儿童和青少年参加身体活动的目的是（）。
A.增进心肺、肌肉和骨髓健康
B.改善心血管和代谢健康的生物指标
C.A和B
D.A或B
[单选题]使用金属外壳的电气工具时应戴（ ）。
A.帆布手套
B.纱手套
C.绝缘手套
D.专用手套
[单选题]幼儿基础代谢的能量消耗应占总能量消耗的( )
A.30%
B.40%
C.50%
D.60%
E.70%
[单项选择]《临证指南医案》指出，“内风”的机制属于
A. 体内气机的逆乱
B. 体内阻血的不足
C. 体内阳气之变动
D. 诸风掉眩，皆属于肝
E. 体内筋脉的失养
[多项选择]工程造价资料的主要用途有( )。
A. 作为编制固定资产投资计划及建设成本分析的参考
B. 作为编制投资估算和初步设计概算的依据
C. 作为审查施工图预算的依据
D. 作为进行工程结算的依据
E. 作为进行投资贷款和资金筹措的依据
[单项选择]中枢神经系统白血病预防性治疗鞘内常注射的药物是：（）
A. 环磷酰胺
B. 柔红霉素
C. 甲氨蝶呤
D. 长春新碱
E. 泼尼松
[判断题]辅助设施检修周期基准周期2年
A.正确
B.错误
[判断题]万用表测量环路电阻，若液晶显示屏左侧出现“1”，说明所测数值未超过现有量程。
A.正确
B.错误
[填空题]A—TOD Stories B—E-newsletters
C—Current Special D—What’s New
E—Editor’s Picks F—Latest In Jobs
G—Highlights H—Letters to Editor
I—Special Reports J—Talkback
K—What Readers Say L—On the Box
M—Classified Post N—Great China Outlook
O—Biz-China P—Online Service Agreement
Q—Privacy Policy R—FAQs
S—Archives T—People In the Know
( )最新招聘信息 ( )编辑推荐
[多选题]单位银行结算账户按用途可分为以下哪几个选项？（ ）
A.基本存款账户
B.一般存款账户
C.特殊存款账户
D.临时存款账户
[单项选择]（）卸膜时，应请客人做笑的表情，以便皮肤与面膜脱离。
A. 敷面贴
B. 敷软膜
C. 敷胶原膜
D. 敷硬膜
[简答题]什么是BGP网络中的IGP同步，为什么要使用IGP同步，在什么情况下可以关闭同步？
[多选题]可以在卷板机上进行操作卷制的是( )。
A.圆柱面
B.圆锥面
C.抛物线面
D.双曲面
[多项选择]自项目开始至项目完成，通过项目策划和项目控制使项目( )的三大目标得以实现是建设项目管理的内涵。
A. 费用
B. 协调
C. 质量
D. 进度
E. 合同
[单选题]车辆按用途分为客车、货车及( )。
A.货车
B.动车组
C.特种用途车
D.检修车
