热门试题:
[判断题]60Si2Mn钢是合金弹簧钢。 ( )
A.正确
B.错误
[单项选择]下列哪项不是黄精的主治病证（）
A. 燥咳
B. 阴虚肺燥
C. 脾胃虚弱
D. 肾精亏虚
E. 内热消渴
[判断题]520屈服强度越高，金属材料的抗拉强度也会越大。
A.正确
B.错误
[不定项选择题]共用题干
Craig Rogers was sitting on his surfboard, scanning（审视）the distance for his next wave, when his board suddenly stopped moving._________(46)"I could have touched its eye with my elbow（肘部）,"says Craig. The shark had surfaced so quietly that he hadn't heard a thing.
In his horror and confusion,he waved his arms and accidentally cut two of his fingers on the shark's teeth.He then slid off the opposite side of his surfboard into the water. Then,with Craig in the water and blood flowing from his fingers,the five-meter-long shark simply swam away,_______(47)
Although sharks are often categorized as killers that hunt and eat as many humans as they can, this is actually inaccurate.Sharks very rarely kill humans.A person has a greater chance of being struck by lightning or drowning（淹死）in a bath than of being killed by a shark. Only 74 people have been reported killed by great whites in the last century.But great white sharks can reach six meters in length and weigh 2,200 kilograms or more.With frightening jaws that can hold up to
3,000 teeth arranged in several rows,they could very easily kill and eat a helpless human in the water.________(48)Shark researchers are trying to comprehend the reasons that allow people to escape without being eaten.
The most common explanation is that great whites don't see well._________(49)There is reason to doubt this,however. Recent information shows that great whites can actually see very well. Also,when attacking seals,great whites shoot up to the surface and bite with great force.When approaching humans,however,_________(50)They soon discover that humans are not a high一fat meal."They spit us out because we're too bony,"says Aidan Martin,director of Reef Quest Center for Shark Research.
Shark researchers like Martin hypothesize that great whites are actually curious animals that like to investigate things.It's possible that they use their bite not only to kill and eat,but also to gather information.Although such an experience is unlucky for people like Craig Rogers,when sharks bite surfboards or other objects or people,they are likely just trying to learn what they are.
_________（46）
A.disappearing into the water below.
B.Why is it,then,that most people survive attacks by great whites?
C.they most often move in slowly and bite less hard.
D.There is reason to doubt that great whites see well enough to attack humans.
E.It has been thought that they mistake people for the seals or sea lions which make up a large part of their diet.
F.He looked down and was terrified to see a great white shark biting the front of his board.
[单选题]横跨梁组装螺栓垂直移动量为( )，开口销须插入螺母的槽口，双向劈开，调整垫圈数量不超过3个。
A.1～3mm
B.2～5mm
C.3～5mm
D.3～8mm
[单选题]药物的个体差异是指药物在不同人体内的处置过程和产生的效应存在差异，这主要取决于
A.性别因素
B.气候的变化
C.心理因素
D.病理生理因素
E.遗传因素
[判断题]空气泡沫枪每次使用完毕后应竖立放置,待自然干后存放于阴凉干燥处。( )(易)
A.正确
B.错误
[单选题]生产经营单位应当建立（ ），如实记录安全生产教育和培训的时间、内容、参加人员以及考核结果等情况。
A.生产经营台账
B.安全生产教育档案
C.安全生产教育和培训档案
D.安全生产培训档案
[判断题]炭疽主要通过皮肤接触，导致人员感染。( )
A.正确
B.错误
[判断题]紧急停车信号的鸣笛鸣示方式为:连续短声。
A.正确
B.错误
[填空题]通过复制、( )、转发等方式将铁路重要信息系统( )泄漏给未经授权的组织或个人属于“安全红线”违章。
[判断题]单纯的天然橡胶和合成橡胶，如不加以适量的配合就无法加工成型为符合要求的制品。
[判断题]使用工作任务单时，工作票的工作班成员栏内，应填写各工作任务单的工作班成员姓名。
A.正确
B.错误
[单选题]苏建招办[2019]2号文：工程总承包招标文件中资格审查合格条件设置类似工程业绩条件时，总承包项目经理类似工程业绩，（ ）作可选条件。
A.投标人的类似工程业绩
B.施工项目负责人类似业绩
C.设计项目负责人类似业绩
D.总承包项目经理类似工程业绩
[单项选择]对医师的业务水平、工作成绩和职业道德状况，依法享有定期考核权的单位是（）。
A. 县级以上人民政府
B. 县级以上人民政府卫生行政部门
C. 县级以上人民政府卫生行政部门委托的机构或组织
D. 医师所在地的医学会或者医师学会
E. 医师所在的医疗、预防、保健机构
[单选题]直流电动机中的电刷是为了引导电流，在实际应用中应采用（ ）电刷。
A.石墨
B.铜质
C.银质
D.铁质
[判断题]能搬瓶就能当危险品运输车（卡车）押运员。
A.正确
B.错误
[单项选择]“气充则神明，气虚则神衰”说明
A. 气能生精
B. 精能化气
C. 气能摄精
D. 神驭精气
E. 气为神之母
[单选题]杨女士在一年前以850元的价格买入某债券100份，该债券面值为1000元，票面利率为8%，每年付息一次，若现在以880元的价格全部卖出，则杨女士持有该债券的收益率为()。
A.12.94%
B.11.85%
C.10.95%
D.10.06%
[单选题]
下面那一项不是CPU的基本功能()。
A.进行算术运算和逻辑运算
B.具有少量数据暂存功能
C.具有音频信号输出功能
D.能对指令进行译码、寄存,并执行指令所规定的操作
[多选题]在车间内行走或作业时可由以下（）方式进入生产岗位或通行。
A.安全过桥
B.安全通道
C.跨越辊道上方
D.穿越设备下方
[多选题]要把公正、公平、公开原则贯穿立法全过程，完善立法体制机
制，坚持立改废释并举，增强法律法规的()。
A.A及时性
B.B系统性
C.C针对性
D.D有效性
[单选题]汽车式起重机行驶时，上车操作室不得坐人。
A.正确
B.错误
C.略
D.略
E.略
F.略
[多选题]举高消防车常用于()火灾扑救。
A.高层建筑
B.高大石油化工装置
C.交通工具
D.高架带电设备
[多选题]发电厂的汽水损失，根据损失部位的不同，可以分为( )。
A.内部损失；
B.外部损失；
C.工艺上必须的汽水损失；
D.非工艺性偶然的汽水损失。
[单项选择]男性，68岁，于5年前开始出现右手抖动，逐渐发展为双手抖动，动作缓慢，行走时常出现碎步，越走越快。查体：“搓丸样”静止性震颤，“齿轮样强直”肌强直，“小写症”“慌张步态”。诊断最可能的是（）
A. 震颤麻痹
B. 老年震颤
C. 肝豆状核变性
D. 肌张力障碍
E. 舞蹈病
[单项选择]二尖瓣狭窄时，右前斜位可见（）
A. 肺淤血
B. 食管下段后移
C. 右心缘有双心房影
D. 左心缘变直
E. 左主支气管上抬
[单选题]不属于百米梯次进攻操训练目的是( )。
A.使消防员熟练掌握在狭小、曲折等各种复杂条件下开展内部作战。
B.懂得进行交替掩护、梯队进攻及水枪阵地铺设、延伸的方法。
C.通过梯队进攻训练,达到长时间作战的要求。
D.增强消防员避险能力。
[判断题]每一机柜的第一块驱动板的第一和第四位控制输出驱动事故继电器，平时工作机的事故继电器在落下状态.
A.正确
B.错误
[多项选择]拉丁字母的基本结构由哪些要素（）
A. 引线
B. 节点
C. 字形
D. 笔画
E. 间距
[单选题]下列各项不属痰证临床表现的是（ ）。
A.咳嗽痰多，痰质黏稠
B.胸脘痞闷，呕恶纳呆
C.神志错乱，癫狂痴痫
D.情志抑郁，胸胁胀痛
E.头晕目眩，形体肥胖
[多选题]处置危险化学品灾害事故，或有燃气泄漏的灾害现场，应严防爆炸伤人。进入有爆炸危险的场所，应尽可能保持低姿状态，依托（）、墙角、柱及大型物件等地形、地物作为掩护。
A. 堤坝
B.土坡
C. 坑凹
D.承重墙
[判断题]在易燃、易爆场所的照明灯具,应使用密闭形或防爆形灯具,在多尘、潮湿和有腐蚀性气体的场所的灯具,应使用防水防尘型。( )
A.正确
B.错误
[判断题]蒸气压非常小或者难于热分解可燃固体,不能发生蒸发燃烧,当氧气包围物质表层时,呈炽热状态发生无焰燃烧现象,称为表面燃烧。( )
A.正确
B.错误
[多选题]新八轴HXD2型电力机车通过制动显示屏和压力表，可以显示总风缸、均衡风缸、总风管、列车管、制动缸压力和列车（ ）的信息，以及（ ）和报警信息。
A.平均管
B.故障诊断
C.总风联管
D.充风流量
[单项选择]Whenever soup is served in the U. S., there’s a good chance that someone will shout "No soup for you!" in the best New York accent that he or she can master.
The line comes from Seinfeld, one of America’s most famous TV sitcoms. This, as well as others, has helped to preserve the "Noo Yawk" even as it evolves.
America has several distinct accents. The plain Midwestern accent is considered the standard American accent. It’s the one often heard on TV and radio. Northeastern cities such as Boston and Philadelphia, as well as the U. S. South, have their own ways of talking. None of these, however, carries the seemingly built-in drama of the New York accent. Perhaps that’s because of the conflicting traits that seem to possess it. All at once, the accent can make a person sound impatient and sarcastic, confident and in-charge.
In the Seinfeld episode, for instance, the owner of a New York City soup restaurant yells at customers to "Have your money ready!" and "Move to
A. it’s the standard American accent
B. it’s preserved by U.S. entertainment without changing it
C. it’s a symbol of upper-class New Yorkers
D. it gives people a sense of belonging to New York
[单选题]电动列车塞拉门的运动轨迹是（ ）。
A.始终位于侧墙的外侧
B.始终位于侧墙的内侧
C.始终位于外墙板与内饰板之间的夹层内
D.在开启状态时车门贴靠在侧墙的外侧，在关闭状态时车门外表面与车体外墙成一平面
