热门试题:
[单项选择]The word "Okay" is known and used by millions of people all over the world. Still, language experts do not agree on where it came from.
Some say it came from the Indian peoples. When Europeans first came to America they heard hundreds of different Indian languages. Many were will developed.
One tribe especially had a well developed language. This was the Chocktaw tribe. They were farmers and fishermen whole lived in the rich Mississippi valley in what is now the state of Alabama. When problems arose, Chocktaw leaders discussed them with the tribal chief. They sat in a circle and listened to the wisdom of the chief.
He heard the different proposals, often raising and lowering his head in agreement, and saying, "Okeh," meaning "it is so."
The Indian languages have given many words to English. Twenty four of the American States almost half, have Indian names, Okalahoma, the Dakotas, Idaho, Wisconsin, Ohio and Tennessee, to name a few. And the names of many rivers, stre
A. almost half of the states once belonged to the Indians
B. the Indian language is well developed
C. the first settlers not only seized the land of the Indians but also borrowed the word "Okay" from them
D. there is some truth in the story that the word came from the Indian language
[单选题]分子筛吸附水的过程为（）
A.放热过程
B.吸热过程
C.吸附刚开始吸热平衡后放热
D.吸附刚开始放热平衡后吸热
[单项选择]在“此友遂敛手不治，以为热毒以深，噬脐无及”中，“噬脐”比喻（）
A. 痛恨不已
B. 忧郁不快
C. 怒气冲天
D. 惶恐不安
E. 后悔不及
[单项选择]
VRML is a (151) for 3D multimedia and shared virtual worlds on the WWW. In comparison to HTML, VRML adds the next level of interaction, structured graphics, and extra (152) (z and time) to the presentation of documents. The applications of VRML are (153) , ranging from simple business graphics to entertaining WWW page graphics, manufacturing, scientific, entertainment, and educational applications, and 3D shared virtual worlds and communities.
X3D is the name under which the development of VRML is continued. X3D is based on XML and is backwards (154) with VRML. Furthermore, it is componentized, profiled, and extensible, which makes it possible to use X3D in very different (155) , from high-end visualizations to lightweight applications.
（155）是（）
A. scenarios
B. places
C. applications
D. programs
[单项选择]Biots呼吸常见于（）
A. 癔症
B. 急性传染病
C. 重度贫血
D. 巴比妥类药物中毒
E. 尿毒症
[判断题]在没有脚手架或者在没有栏杆的脚手架上工作，高度超过2m时，应使用安全带，或采取其他可靠的安全措施。
A.正确
B.错误
[多项选择]安全生产事关（）。
A. 人民群众生命财产安全
B. 我国生产力发展水平
C. 改革开放、经济发展和社会稳定大局
D. 党和政府形象与声誉
[判断题]汽车客运站的法定代表人是安全生产第一负责人,全面负责汽车客运站的安全生产工作。其他工作人员只对自己分管的业务工作负责。
A.正确
B.错误
[单项选择]新生儿可从母体获得，但3—5个月后逐渐消失的抗体是（）
A. 免疫细胞
B. 补体
C. IgG
D. IgM
E. lgA
[单项选择]There was such a long line at the exhibition ______ we had to wait for about half an hour.
A. as
B. that
C. so
D. hence
[判断题]紫杉醇又称红豆杉醇，是具有抗癌活性的二萜类生物碱类化合物。
[多项选择]保密违法案件查处的主要内容有（）。
A. 查明案情
B. 及时补救
C. 责任追究
D. 保密整改
[单项选择]根据《公路工程地质勘察规范》(JTJ064-98)对采空区进行定位观测时，定位观测点的间距应视开采深度而定。当开采深度为200～300m时，观测点的间距应取( )。
A. 5m
B. 10m
C. 15m
D. 20m
[判断题]期货公司依法对保证金安全实施监控。（ ）
A.正确
B.错误
[单项选择]滑轮直径越小，钢丝绳弯曲越（），钢丝绳的损坏就越（）。
A. 严重；快
B. 轻微；慢
C. 严重；慢
D. 轻微；快
[单项选择]生产线上某一加工设备的加工质量波动具有一定的周期性，不宜采用( )。
A. 简单随机抽样
B. 系统抽样
C. 整群抽样
D. 分层抽样
[单项选择]不符合梅格斯综合征的是（）。
A. 常伴胸腔积液、腹水
B. 肿瘤为实质性
C. 是一种恶性肿瘤
D. 多见于老年妇女
E. 切除肿瘤后，胸腔积液、腹水自行消失
[简答题]
Directions: In this part, you will have 15 minutes to go over the
passage quickly and answer the questions on Answer Sheet 1. For questions 1-7,
choose the best answer from the four choices marked A, B, C and D. For
questions 8-10, complete the sentences with the information given in the
passage.
Americans and Food
An unusual
but timely cartoon recently appeared in the local newspaper. The single panel
showed a gravel-pit operation with piles of raw earth and large cranes. Next to
one of the cranes stood the owner of the gravel pit—a grizzled, tough-looking
character, hammer in hand, pointing proudly to the new sign he had just
tacked up. The sign read, "Fred’s Fill Dirt and Croissants." The cartoon
illustrates an interesting phenomenon: the changing food habits of
Americans. Our meals used to consist of something like home cooked pot roast,
mashed potatoes laced with butter and salt, a thick
[单项选择]婴儿学会称呼邻居家的男性为“叔叔”后，他可能会对所遇到的任何陌生男性均称呼为“叔叔”，这种迁移属于（）。
A. 顺向迁移
B. 横向迁移
C. 正迁移
D. 一般迁移
[单选题]在一定反应条件下，烷烃从一种异构体变成另一种异构体的反应称为（）。
A.卤代反应
B.异构变化
C.热裂化反应
D.氧化和燃烧反应
[单选题]签派放行文件需保存的期限是：
A.至少30天
B.至少90天
C.至少3个月
D.至少6个月
[单项选择]根据水利部《水利建设质量工作考核办法》（水建管[2014]351号），工程发生重大质量事故的，考核等次一律为（）级。
A. A
B. B
C. C
D. D
[单项选择]下列滤池中不会产生负水头是的（）。
A. 无阀滤池
B. 快滤池
C. 移动冲洗罩滤池
D. 压力滤池
[多选题]列控中心向车站联锁传输（ ）信息。
A.区间方向信息
B.区间闭塞分区状态信息
C.信号降级命令
D.RBC信息
[单项选择] Text
The conception of poverty and what to (26) about it have changed over the decades. Under Social Darwinism the lazy and the (27) were supposed to be at the bottom of the economic ladder as a result of the "law of (28) of the fittest". Society was (29) as a network of self-sufficient families which provided for their own. (30) persons outside a household (orphans, the (31) elderly,and the crippled) were provided outdoor relief grudgingly and as a temporary expedient. Although it was (32) that "the poor will always be with us", the individual was expected to improve himself (33) acts of his own will. Charity was thought to be the (34) of idleness. By keeping wages low, labourers would be (35) to work harder.
At about the turn of the century, the beginning of concern about natural (36) b
A. poor
B. better
C. humble
D. miserable
[单选题]中毒窒息：由呼吸过程吸入（ ）后，则可与人体内血红蛋白结合，抑制组织细胞色素氧化酶，影响氧在组织内的传递和代谢，导致组织缺氧，引起窒息。
A.过量的有毒气体
B.化学性窒息性气体
C.毒气
[单项选择]甲委托乙拍卖行拍卖自己所有的一幅名画，则下列乙拍卖行的行为合法的是：
A. 虽然甲要求乙保密其身份，但在拍卖开始后应竞买人的要求公布了其身份
B. 应甲的要求，在拍卖中保密了该标的物的保留价
C. 乙自己参加了对该物品的竞买
D. 乙在成功拍出该物品后，又拍卖了其自己所有的一幅画
[单选题]根据《变电安规》，二次系统和照明等回路上的工作，无需将高压设备停电者或做安全措施者应填用（ ）工作票。
A.第一种
B.第二种
C.带电作业
D.二次工作安全措施
[填空题]Haller指数是判断（ ）畸形程度的指标，当其大于（ ）时需手术治疗。
[单选题] 中央气道胸外部位阻塞可引起
A.吸气性呼吸困难
B.呼气性呼吸困难
C.劳力性呼吸困难
D.夜间阵发性呼吸困难
E.急性呼吸窘迫综合征
[填空题]联锁关系试验检查（以下简称联锁试验）分为施工联锁试验、日常维修联锁试验、 。
[单选题]为保证车辆地板设定的高度不随载荷的变化而变化，采用（ ）调平式。
A.两点
B.三点
C.四点
D.五点
[填空题]生产经营单位应当具备本法和有关法律、行政法规和国家标准或者行业标准规定的（ ）;不具备安全生产条件的,不得从事（ ）活动。
[单项选择]城市通信工程规划系统中，将用户的信息资料(包括固体、液体和气体的)由( )进行传输的行为称为邮政。
A. 快递方式
B. 人工方式
C. 无线电方式
D. 有线电方式
[单选题]《10kV-500kV输变电设备交接试验规程》中规定，隔离开关和接地开关操动机构线圈最低动作电压一般在操作电源额定电压的（ ）范围内。
A.30%～80%
B.40%～80%
C.30%～90%
D.40%～90%
[单选题]20世纪是科学家大展宏图的世纪。只要我们稍微想一下就会发现，人类的生活越来越离不开科学家的参与：从曼哈顿工程到阿波罗计划，从核能发电到信息高速公路，等等，无不与科学家的参与有关，所有这些都使我们对科学家充满了敬慕之情。同时，我们也都清楚地知道：从二战后期的原子弹事件到两伊战争，从以美国为首的多国部队对南斯拉夫的野蛮轰炸到克隆羊的诞生，从温室效应到全球生态环境的恶化，无不涉及科学家的研究成果。对这段文字的主旨概括最准确的是( )。
A.科学家的不少研究成果是一把双刃剑
B.告诫人们科学研究成果可能带来灾难
C.科学家的研究成果改变着我们的生活
D.强调人类的生活越来越离不开科学家
[单选题]按移动方式分类，灭火器可分为手提式和(____)。
A.贮压式
B.推车式
C.贮气瓶式
D.自压式
