热门试题:
[单项选择]下列基础中，属于柔性基础的是( )。
A. 混凝土基础
B. 钢筋混凝土基础
C. 条形基础
D. 独立基础
[单项选择]食品添加剂是为提高食品品质和色、香、味、形，以及防腐、保鲜和加工工艺的功能而加入食品中的化学合成或天然物质。食品添加剂只要以合理方式、合理剂量使用，不会引发食品安全问题。
根据上述定义，下列属于食品添加剂的是：
A. 色素、膨松剂、蛋白精、防腐剂
B. 甜味剂、水分、乳化剂、硫化钠
C. 味精、本糖醇、维生素、矿物质
D. 着色剂、罂粟壳、面粉处理剂
[判断题]对封闭空间建筑实施内攻前,可以不用排烟散热。()
A.正确
B.错误
[单项选择]
Robots May Allow Surgery in Space
Small robots designed by University of Nebraska researchers may allow doctors on Earth to help perform surgery on patients in space.
The tiny, wheeled robots,
(1) are about 3 inches tall and as wide as a lipstick case, can be slipped into small incisions (切口) and computer-controlled by surgeons in different locations. Some robots are equipped
(2) cameras and lights and can send images back to surgeons and others have surgical tools attached that can be
(3) remotely.
"We think this is going to
(4) open surgery," Dr. Dmitry Oleynikov said at a news conference. Oleynikov is a
(5) in computer-assisted surgery at the University of Nebraska Medical Center in Omaha.
Officials hope that NASA will teach
(6) to use the robots soon enough so that surgeries could one day be performed in space.
On earth, the surgeons could control the robots the
A. controlled
B. developed
C. repaired
D. provided
[单选题]黎明时腹泻因为是？
A.湿热证
B.虚寒证
C.肾阳虚
D.伤食症
E.肾阴虚
[单选题]中国人民政治协商会议第一届全体会议决定，以《义勇军进行曲》 为（）。
A.国歌
B.临时国歌
C.代国歌
D.会歌
[单项选择]Part A
You will hear 10 short dialogues. For each dialogue, there is one question and four possible answers. Choose the correct answer--A, B, C or D, and mark it in your test booklet. You will have 15 seconds to answer the question and you will hear each dialogue ONLY ONCE.What does the man say about Jone
A. She will stop teaching law.
B. She has no plans for her life after school.
C. She might not complete law degree.
D. She has doubts about becoming a policewoman.
[单项选择]热疮引起原因多为外感
A. 暑热
B. 血热
C. 热毒
D. 风热
E. 血瘀
[多选题] 某A类地区变电站总供电负荷52MW,以下几种故障处理方案符合供电安全准则要求的有(____)。
A.负荷3.8MW的中压主干线路故障,故障段(负荷1.6MW)经3小时抢修后恢复送电,非故障段10分钟恢复送电
B.负荷4.3MW的中压主干线路故障,故障停运段(负荷2.2MW)经3小时抢修后恢复送电,其他段15分钟恢复送电
C.变电站1台30MW主变停运,10分钟恢复18MW负荷供电,2小时恢复所有负荷供电
D.变电站1台22MW主变停运,15分钟恢复所有负荷供电"
[填空题]断路器的液压结构中氮气足起储能作用，液压油是起（）作用的。
[判断题]我们党矢志不渝的奋斗目标是实现共同富裕。( )
A.正确
B.错误
[单项选择]根据万能圆锯机的加工特点，在装磨前应调整（）的斜度。
A. 刀具
B. 平台
C. 型夹
D. 送料器
[单选题]带电检测110kV绝缘子串（7片成串）时，当发现同一串中的零值绝缘子片数达到（）片时，应立即停止检测。
A.4
B.2
C.3
D.5
[单项选择]维生素A的鉴别反应是：
A. 硝酸显色反应
B. 三氯化锑显色反应
C. 水解为生育酚还原Fe3+的显色反应
D. 硫酸显色反应
E. 三氯化铁反应
[单项选择]大肠癌好发于（）
A. 直肠和乙状结肠
B. 乙状结肠和降结肠
C. 横结肠
D. 升结肠
E. 盲肠和回盲部
[单选题]《铁路交通事故调查处理规则》规定，由于货物超载、偏载造成车辆断轴事故，定装车站或( )责任。
A.作业站
B.货运公司
C.货场
D.货运员
[多选题]自动闭塞区段遇下列（ ）情况发车的行车凭证为绿色许可证。
A.由未设出站信号机的线路上发出列车
B.出站信号机故障时发出列车
C.超长列车头部越过出站信号机发出列车
D.通过信号机故障
[单选题]有限空间一般是指（）、地下和地上有限空间。
A.密闭设备
B.楼梯间
C.溶洞
[多选题]采煤机滚筒的主要作用有( )。
A.A、装煤
B.B、破煤
C.C、运煤
D.D、碎煤
[判断题]“爱岗敬业、诚实守信、办事公道、服务群众、奉献社会”，这是我国每名从业人员都应奉行的职业道德基本规范。
A.正确
B.错误
[判断题]人民警察对暴力袭击人民警察,危害人民警察生命安全的犯罪分子,经警告无效,可以使用武器。
A.正确
B.错误
[单项选择]触电触及断落在地上的带电高压导线，尚未确认有无电前，救护人员不可进入断落点（）范围内。
A. 3-5M
B. 5--8M
C. 10-15M
D. 8--10M
[不定项选择题]资料：It’s easy to trace the evolution of the automobile.At most，we’re only talking about a few centuries of technological development，and most of the plans，prototypes and models are still around. With just a little research，you can easily trace the latest model electric hybrid back to its steam-powered ancestors.
Your family tree is probably a different matter. Even an extensive genealogy chart can only reach back so far，and mortality puts a rather strict limit on exactly how many “models” are still on the road. Humanity’s evolutionary progression is even more difficult. We still have plenty of living primate relatives，but many of the life forms that connect the evolutionary dots are long extinct.
Evolutionary biologists use several methods to decipher exactly how we came to be as we are.In fact，the field itself encompasses several different disciplines in addition to biology，like genetics，psychology，geology，archaeology linguistics，anthropology and primatology just to name a few. Naturally，paleoanthropology also plays a key role，as we have to turn to the fossil record for many clues about our ancient primate，human and nearly human ancestors.
While the fossil record by its very nature is incomplete，there’s no shortage of fossil evidence to link the planet’s varied life forms into a great tree of life， a chart that scientists call a phylogenetic tree. You can think of humans as the very tip of just one branch on that tree called “hominid.” Chimpanzees exist at the end of an adjoining branch called “panin.” Follow both the hominid and panin branch back about 5.4 million years， and you’ll find a point where scientists think the two converged from a single，common ancestor.
Fossil evidence helps scientists to reconstruct these trees，but so do morphological and genetic studlies. Genetic analysis has yielded striking similarities between chimps and humans. As such， scientists know a last common ancestor of chimps and humans existed，even if we’ve yet to determine the exact species. Yet paleoanthropologists have found numerous hominid fossils to bridge the evolutionary progression from that unknown common ancestor to modern humans. These finds include such famous East African fossils as Lucy（Australopithecus afarensis），which strengthened the importance of bipedalism in human evolution and proved an essential milestone on our way to modern Homo sapiens.
Fossil evidence for human evolution will never be complete，as fossils themselves are rare geologic occurrences.Nevertheless，by incorporating other scientific disciplines，we’re able to build an increasingly accurate picture of just what our evolutionary family tree consisted of.
What does the underlined word “bipedalism”refer to in Para.5?
A.Hominid and panin.
B.Chimps and humans.
C.Walking on two legs.
D.Morphological and genetic studies.
[单项选择]目前，只有（）可以实现无纸化发行和交易。
A. 实物债券
B. 凭证式债券
C. 记账式债券
D. 中央政府债券
[单项选择]肯定先天遗传因素和后天环境因素对儿童发展都有重要影响的理论是（）
A. 遗传决定论
B. 教育万能论
C. 环境决定论
D. 辐和论
[单选题]大叶性肺炎合并肺肉质变的机制是:
A.病变范围太广
B.纤维素渗出太多
C.中性粒细胞渗出过多
D.肺组织结构被炎症破坏
E.病程太长
[单项选择]The new constitution will take ______ from the beginning of July.
[单选题]应避免与牙齿接触的药物是
A.磺胺合剂
B.棕色合剂
C.1%稀盐酸
D.氢氧化铝凝胶
E.颠茄合剂
[多选题]临时用电方案编制时应考虑（）等，并形成现场示意简图、安全用电措施
A.用电负荷
B.用电设备简述
C.电缆敷设走向
D.用电时间
[多项选择]
患儿，男性，2个月，因"咳嗽、气促5天"就诊。查体示：体温37.2℃，呼吸45次／分，体重6kg；心率148次／分，心律整齐。心前区稍隆起，心脏搏动增强。心音清晰有力，胸骨左缘3～4肋间闻及2／6级柔和的收缩期杂音，P2亢进。双肺呼吸音粗，可闻及少许干、湿啰音。腹部平软，无压痛反跳痛，未触及包块，肝肋下2cm，质软。双下肢无水肿，唇甲无紫绀。
对于该种疾病，胸部平片中可能出现（）。
A. 左心室扩大
B. 主动脉结增宽
C. 肺动脉段凹陷
D. 肺纹理增粗
E. 肺血管残根样改变
F. 肺门舞蹈征
[多项选择]瓦斯具有（）等。
A. 爆炸性
B. 可燃性
C. 窒息性
[多项选择]带电作业工具应（），并建立试验、检修、使用记录。
A. 统一编号
B. 专人保管
C. 登记造册
D. 统一领用
E. 定点摆放
[判断题]调整车辆位置时,应安排人员在车辆后方进行指挥引导。( )
A.正确
B.错误
[判断题]行政强制措施由法律、法规规定的行政机关在法定职权范围内实施。行政强制措施权可以委托。( )(不得委托)
A.正确
B.错误
[单项选择]下列有关固定资产的折旧年限的说法，不正确的是( )。
A. 房屋、建筑物的最低折旧年限为20年
B. 飞机、火车、轮船、机器的最低折旧年限为10年
C. 与生产经营活动有关的器具、工具、家具的最低折旧年限为5年
D. 电子设备的最低折旧年限为4年
