热门试题:
[单项选择] The idea of a fish being able to generate electricity strong enough to light lamp bulbs--or even to run a small electric motor--is almost unbelievable, but several kinds of fish are able to do this. Even more strangely, this curious power has been acquired in different ways by fish belonging to very different families.
Perhaps the best known are the electric rays, or torpedoes(电鳐), of which several kinds live in warm seas. They possess on each side of the head, behind the eyes, a large organ consisting of a number of hexagonal shaped cells rather like a honeycomb. The cells are filled with a jelly-like substance, and contain a series of flat electric plates. One side, the negative side, of each plate, is supplied with very fine nerves, connected with a main nerve coming from a special part of the brain. Current passes from the upper, positive side of the organ downwards, to the negative, lower side. Generally it is necessary to touch the fish in two places, completing the circui
A. the working system of the electric plates in the eel is the most effective
B. the working system of the electric plates in the eel is far inferior to those in the torpedo
C. compared with those in the torpedo, the working system of electric plates in the eel is more direct and efficient
D. compared with other electric fish, the eel possesses much more electric plates
[判断题]( ) 67.BB002 油管结蜡会使抽油泵阀漏失,示功图图形呈鸭蛋圆,油井产量下降。
A.正确
B.错误
[单选题]总配电箱中漏电保护器的额定漏电动作电流I△和额定漏电动作时间T△的选择要求是( )。
A.I△>30mA,T△=0.1s
B.I△=30mA,T△>0.1s
C.I△>30mA,T△>0.1s
D.I△>30mA,T△>0.1s,I△·T△≯30mA·0.1s
[多选题]空调系统螺杆机应检查水系统（）等运行正常
A.循环水泵
B.水流开关
C.各阀门
D.密封
[单项选择]财务管理区别于其他管理的特点在于它是一种( )。
A. 实物管理
B. 资金管理
C. 价值管理
D. 决策管理
[单项选择]海事卫星通信系统使用的通信频段是（）。
A. L波段
B. S波段
C. C波段
D. Ku波段
[简答题]电子控制自动变速器与液压控制自动变速器有何区别？
[单项选择]
短文理解1
An Extraordinary Change or Direction
Molly Wilson had been a dancer and a mother for many years when she decided to sail round the world to raise money for charity.
As a child she had trained as a ballet dancer, but at 15 she had grown too tall for classical ballet, so she became a member of a pop dance team.
She got married, and after she had children she retired from show business to bring them up. They grew up, and when they were 18 they left home.
She says, “When I decided to do the round- the – world race, my husband thought I was bored because the children had left home. He was also worried because I had never sailed before. I was not bored, but I had met some people who told me about the race. They had taken part in it, but they had only done one section, say, from New Zealand to Australia. I wanted to do the whole ten-month journey.”
Before Molly left she did a lot of training, but it hadn’t pre
A. group of people
B. part of the training
C. part of the route of sail
D. part of the job
[判断题]在区间行走时应走路肩；在道床上行走或工作时，应不断前后瞭望。（ ）
A.正确
B.错误
[单项选择]工程建设投资估算指标是编制建设工程投资估算的依据。下面对投资估算表述正确的是 ( )。
A. 投资估算指标分为建设项目综合指标和单项工程指标两个层次
B. 投资估算指标的综合程度越大越好
C. 投资估算指标比其他各种计价定额具有更大的综合性和概括性
D. 投资估算指标的概括性不如概算指标全面
[单选题]分组人工捣固时，前后距离应不小于（ ）根轨枕，作业人员前脚不得伸出轨枕边缘。
A.2
B.3
C.4
D.5
[单项选择]小钢卷尺主要用于测量较短管线的（）。
A. 长度
B. 内径
C. 外径
D. 壁厚
[单项选择]习惯枯萎病病部在环境潮湿时，常见到（）色霉状物。
A. 粉红
B. 白
C. 灰
D. 黑
[单选题]羚角钩藤汤与天麻钩藤饮的组成药物中均含有
A.茯神
B.霜桑叶
C.桑寄生
D.夜交藤
E.益母草
[单选题](单选题)关于行政处罚决定书,下列说法错误的是()
A. 当事人的姓名或单位的名称应当书写完整
B. 适用法律法规的名称应当写全称
C. 罚款的数额及履行期限应当使用中文大写数字
D. 可以加盖行政机关或者承办机构的印章
[多选题]全网稽核业务主要针对人为原因造成的______通行费行为,包括收费人员不规范操作、收费运营管理单位管理漏洞、发行服务机构违规发行、车辆驾驶人员恶意逃费、客户使用虚假行驶证等。( )
A.少交
B.漏交
C.拒交
D.未交
[多选题]检修（施工）单位的（ ）名单应事先送设备运维管理单位备案。
A.工作票签发人
B.工作许可人
C.工作负责人
D.专责监护人
[多选题]遇天气恶劣调车有关信号显示距离不足（ ）m时，调车速度不得超过（ ）km/h。
A.10
B.15
C.30
D.50
[多选题]在一次设备运行而停用部分保护进行工作时,应特别注意(____)。
A. 注意断开不经连接片的跳闸线
B. 注意断开不经连接片的合闸线
C. 注意断开不经连接片的.与运行设备有关的连线
D. 注意断开电流回路
[多选题]（类别：号段管理难度：中等）有关js函数，描述正确的是？（）
A.函数是多条执行语句的封装体，只有被调用才会被运行
B.有一个函数fun（temp），如果此时调用fun（），将不能正常运行
C.有一个函数fun（），如果此时调用fun（“abc”），将不能正常运行
D.如果存在两个相同名称的函数，将执行最后一个加载的函数
[单项选择]Menorca or Majorca It is that time of the year again. The brochures are piling up in travel agents while newspapers and magazines bulge with advice about where to go. But the traditional packaged holiday, a British innovation that provided many timid natives with their first experience of warm sand, is not what it was. Indeed, the industry is anxiously awaiting a High Court ruling to find out exactly what it now is.
Two things have changed the way Britons research and book their holidays: low-cost airlines and the internet. Instead of buying a ready made package consisting of a flight, hotel, car hire and assorted entertainment from a tour operator’s brochure, it is now easy to put together a trip using an online travel agent like Expedia or Travelocity, which last July bought Lastminute. com for ￡577m (＄1 billion), or from the proliferating websites of airlines, hotels and car-rental firms.
This has led some to sound the death knell for high street travel agents and tour ope
A. An annual holiday
B. A High Court ruling
C. A new package
D. A British innovation
[判断题]伤员脱离电源后，当发现触电者呼吸微弱或停止时，应立即通畅触电者的气道以促进触电者呼吸或便于抢救。
A.正确
B.错误
[单项选择]对于犯罪后自首又有重大立功表现的犯罪分子，( )。
A. 应当从轻或者减轻处罚
B. 应当免除处罚
C. 可以减轻或者免除处罚
D. 应当减轻或者免除处罚
[单选题]纳税人有视同销售货物行为而无销售额的，确定增值税销售额时错误的是（ ）。
A.按纳税人最近时期同类货物的平均销售价格确定
B.按纳税人最近时期同类货物的最高销售价格确定
C.按其他纳税人最近时期同类货物的平均销售价格确定
D.按组成计税价格确定
[单项选择]液压扩张器的最大扩张扩大距离是（）mm。
A. 500.0
B. 600.0
C. 700.0
D. 800.0
[单项选择]门脉高压症食管静脉曲张破裂出血最易并发
A. 脾大，脾功能亢进
B. 急性肾衰
C. 肝坏死
D. 肝昏迷
E. 腹腔积液，胸腔积液
[单项选择]服务人口1万～5万人，年营业额在3000万～10000万元的居住区商场内，日用百货商店和超级市场通常是主要租户，这种商业物业类型称为（）。
A. 地区购物商场
B. 居住区商场
C. 邻里服务性商店
D. 特色性商店
[单选题]下列行为应当给予治安管理处罚的是（）。
A.王某私自种植罂粟200棵，后听公安机关法制宣传后在罂粟成熟前悄悄铲除销毁
B.老王非法种植200株罂粟经公安机关处理后又种植的
C.老张非法种植200株罂粟后被公安发现后经教育拒绝铲除
D.小华在自家田里偷种了大约400株罂粟，收获后准备用来配药给牲畜治病，后被公安机关查获
[单项选择]以下哪一项不是VLAN依据的标准 ( )
A. 端口号和M[AC地址
B. 协议
C. 应用
D. 以上全部都是建立VLAN的标准
[多选题]尖轨与基本轨不密贴的原因有：( )
A.“三道缝”
B.连接杆与尖轨耳铁连接的距离不合适
C.基本轨横向移动
D.基本轨弯折不正确
E.基本轨本身有硬弯
[填空题]汽轮机轴瓦损坏的主要原因是( );机组强烈振动;轴瓦制造不良;( );( )。
[单项选择]烷烃生成焦炭的过程是（）。
A. 烷烃→稠环芳烃→高分子缩合物→胶质→沥青质→焦炭
B. 烷烃→稠环芳烃→高分子缩合物→沥青质→胶质→焦炭
C. 烷烃→稠环芳烃→胶质→高分子缩合物→沥青质→焦炭
D. 烷烃→稠环芳烃→沥青质→胶质→高分子缩合物→焦炭
[单项选择]（）的优点是企业可不必预先筹集一笔相当于资产买价的资金就可以获得所需要的资产。
A. 融资租赁
B. 国际债券
C. 企业债券
D. 出口信贷
[单项选择]I wish this （） true.
A. were
B. should be
C. is
D. has been
[判断题]“一花独放不是春,百花齐放春满园。”追求幸福生活是各国人民共同愿望,各国应该坚持要开放不要封闭,要合作不要对抗,要共赢不要独占。( )
A.正确
B.错误
