[单项选择]
You can tell the age of a tree by counting its ring. But these records of a tree’s life really say a lot more. Scientists are using tree ring to learn what’s been happening on the sun’s surface for the last ten thousand years. Each ring represents a year of growth. As the tree grows, it adds a layer to its trunk, taking up chemical elements from the air. By looking at elements in the rings from a certain years, scientists can tell what elements were in the air that year. Dr. Stevenson is analyzing one element, carbon-14, in ring from both living and dead tree. Some ring go back almost ten thousand year to the end of the Ice Age. When Stevenson followed the carbon-14 levels changed with the intensity of solar burning. You see, the sun has cycles. Sometimes it bums fiercely, and at other times it is relatively calm. During the sun’s violent periods, it throw off charged particles in fast moving streams called "solar winds". The particularly
A. less
B. more
C. no
D. much
[简答题]
Even on paper, urban sprawl looks ugly. It looks more so from
the 110th floor of Chicago’s Sears Tower. From there you can survey, into the
misty distance, a metropolitan area that now encompasses no fewer than 265
separate municipalities and covers 3,800 square miles in six northeastern
Illinois counties.
The expansion of the region is sometimes
described as growth. More accurately, Chicago has simply spread out. Between
1970 and 1990 the population of the metro area increased by only 4%, while land
used for housing increased by 46%. More telling, land used for commercial
development increased by a whopping 74%.
The drawbacks of sprawl
need no repetition: the isolation of less mobile (usually poorer) groups in the
inner cities, and the premature abandonment of infrastructure. Worse, these
problems are now overtaking the very suburbs that were once supposed to escape
them. Between 1970 and 1990, the city of Chicago lost 17% of its popul
[判断题]地脚螺栓可以松紧不一。（ ）
A.正确
B.错误
[单项选择]下列属于货币的时滞效应的是( )。
A. 行业时滞
B. 后期时滞
C. 前期时滞
D. 内部时滞
[填空题] Although there are many skillful Braille readers, thousands of other blind people find it difficult to learn that system. They are thereby shut (61)______ from the world of books and newspapers, having to (62)______ on friends to read aloud to them.
A young scientist named Raymond Kurzweil has now designed a computer which is a major (63)______ in providing aid to the (64)______ . His machine, Cyclops, has a camera that (65)______ any page, interprets the print into sounds, and then delivers them orally in a robot-like (66)______ through a speaker. By pressing the appropriate buttons (67)______ Cyclops’’s keyboard, a blind person can "read" any (68)______ document in the English language.
This remarkable invention represents a tremendous (69)______ forward in the education of the handicapped. At present, Cyclops costs $50,000. (70)______ , Mr. Kurzweil and his associates are preparing a smaller (71)______ improved version that will sell (72)______ less than half that pric
A. A．dwell
B．rely
C．press
D．urge
[多项选择]按规定应设置总会计师的单位有( )。
A. 大中型企业
B. 事业单位
C. 行政部门
D. 业务主管部门
[单选题]聚合反应按单体和聚合物在组成和结构上发生的变化分类，分为加成聚合（简称加聚）反应和( )反应两类。
A.聚合反应
B.缩合聚合
C.逐步聚合
D.共聚
[单选题]在铁塔塔图上，主材上“后103”铁表示的是（ ）。
A.C腿第一段的3号主铁
B.C腿第三段的1号主铁
C.腿第一段的3号主铁
D.腿第三段的1号主铁
[单项选择]变速箱是（）、（）和（）的总称。
A. 齿轮变速箱，涡轮变速箱，变矩器；
B. 齿轮增速箱，减速器，离合器；
C. 增速器，减速器，同步器；
[单项选择]行政征收的主要特征不正确的是( )。
A. 行政征收的主要特征是行政主体针对公民、法人或其他组织实施的一种多方面具体行政行为
B. 其实质在于行政主体以强制方式无偿取得相对方的财产的所有权
C. 其实施须以相对方负有行政法上的缴纳义务为前提
D. 行政征收是针对公民、法人及其他组织实施的
[多项选择]下列有关房产税征税办法的表述中正确的有( )。
A. 房屋出典期间，出典人为房产税纳税人
B. 个人在城镇的居民住房应征房产税，在农村的居民住房不征房产税
C. 融资租赁房屋在租赁期间房产税的纳税人由当地税务机关根据情况确定
D. 外国人经营对外出租的房产也应缴纳房产税
E. 以房产投资联营并参与利润分红，共同承担风险的按房产余值为计税依据征税
[单项选择]As an operating system repeatedly allocates and frees storage space, many physically separated unused areas appear. This phenomenon is called ______.
A. fragmentation
B. compaction
C. swapping
D. paging
[判断题] 采煤工作面回采前必须编制作业规程。()
A.正确
B.错误
[多选题]若城镇水厂取水构筑物采用虹吸管输水，试选出叙述正确的几项。（ ）
A.虹吸管设计流速不宜小于0.6m/s
B.当一条原水输水管停止工作时，其余管道的通过流量应不少于最高口平均时用水量与输水管漏损水量和水厂自用水量三项总和的70%
C.河面封冻时，取水头部进水孔上缘距冰层下缘不宜小于0.5m
D.虹吸管必须采用钢管
[单选题]在自主飞行过程中，遥控器油门的位置应处于？
A.油门处与中间略上
B.油门处于最下方
C.油门处于最上方
[单项选择]便溏如黄糜，泻下不爽者，多属（）
A. 大肠湿热
B. 寒湿内盛
C. 伤食积滞
D. 脾胃虚弱
[单选题]关于下丘脑功能的描述错误的是
A.皮质下植物性功能调节中枢
B.痛、温、触觉的皮质下调节中枢
C.血压和体温调节中枢
D.饮食和睡眠调节中枢
E.水盐代谢的皮质下中枢
[单选题]两名交警队协管员巡逻时对韩某驾驶的小汽车进行检查。在查车的过程中,司机韩某拒不开车门,并从车内拿出一把砍刀当面威胁协管员,逃避检查。对韩某的行为应 )处理。
A.以非法携带管制器具定性
B.以阻碍执行职务定性
C.以非法携带管制器具和阻碍执行职务定性
D.从重处罚
[判断题]与坐轮椅的残疾人交谈，时间超过一分钟，志愿者最好采用蹲式与其谈话，此时双方的目光在同一水平线上。
[单项选择]甲、乙两人骑骆驼到沙漠探险，他们每天可以在沙漠中走40千米，已知每人最多可以带一个人48天的食物和水，途中甲有事提前返回，如果可以将部分事物和水存放于途中，以备返回时取用，那么乙最多可以深入沙漠多少千米
A. 1000
B. 1440
C. 1860
D. 2400
[判断题]迟交票款、运费、杂费时，从应收该项费用之次日起至付款日止，每迟交一日，按迟交总额的1%核收运输费用迟交金。
A.正确
B.错误
[单选题]毒性药品销毁方法应依据毒性药品的
A.理化性质
B.作用原理
C.毒性大小
D.数量
E.污染强度
[单选题]交易数据主要包括ETC门架系统交易数据、通行数据、其他交易数据、退费交易数据、补交交易数据、收费冲正交易数据、充值交易数据、充值冲正交易数据、（）等。
A.退款交易数据
B.车流数据
C.费额数据
D.流水数据
[单选题]等速阶段过速保护继电器的动作值是( )。 (单选题)
A.253V
B.242V
C.220V
