热门试题:
[简答题]In the span of 18 months, Isaac Newton invented calculus, constructed a theory of optics, explained how gravity works and discovered his laws of motion. As a result, 1665 and the early months of 1666 are termed his annus mirabilis. (46)It was a sustained sprint of intellectual achievement that no one thought could ever be equaled. But in a span of a few years just before 1900, it all began to unravel. One phenomenon after another was discovered which could not be explained by the laws of classical physics. (47) The theories of Newton, and of James Clerk Maxwell who followed him in the mid-19th century by crafting a more comprehensive account of electromagnetism, were in trouble.
Then, in 1905, a young patent clerk named Albert Einstein found the way forward. In five remarkable papers, he showed that atoms are real (it was still controversial at the time), presented his special theory of relativity, and put quantum theory on its feet. It was a different achievement
[单项选择]职业性传播机构通过广播、电视、电影、报刊、书籍等大众传播媒介向范围广泛、为数众多的社会人群传递信息的过程被称为（）
A. 人际传播
B. 群体传播
C. 大众传播
D. 组织传播
E. 自我传播
[单项选择]粮食水分含量为多少时霉菌繁殖产毒能力最强（）
A. 13%～14%
B. 14%～16%
C. 17%~18%
D. 18%～19%
E. 19%～20%
[单项选择]下列关于E-R模型的叙述中，( )是不正确的。
A. 在E-R图中，实体类型用椭圆形表示，属性用矩形表示，联系用棱形表示
B. 实体类型问的联系通常可以分为1:1，1:n和m:n三类
C. 1:1联系是1:n联系的特例，1:n联系是m:n联系的特例
D. 联系不仅存在于两个实体型之间，也存在于两个以上的实体型之间
[单选题] 事故应急救援预案应以努力保护（ ）为第一目的。
A.人身安全
B.重要设备
C.自然环境
D.财产安全
[单选题]《生产安全事故报告和调查处理条例》规定,造成3人以上10以下死亡,或者10以上50人以下重伤,或者1000万元以上5000万元以下直接经济损失的事故是()事故。
A.特别重大
B.一般
C.较大
[单项选择]烧干窑衬及升温的基本原则归结为（）。
A. 快升温、不回头
B. 快升温、顾两头
C. 慢升温、顾两头
D. 慢升温、不回头
[单选题] 136. 气测录井仪器标定,直计算机相应的调校窗口或打印图上标注气样( ).仪器型号.仪器编号.小队号.操作员姓名.操作日期和技术条件,技术条件包括:流量.压力.温度.保留时间。(出自Q/SY 02113-2017)
A.数量
B.名称
C.浓度
D.组分
[多项选择]自觉遵守社会公德的意义有( )
A. 遵守社会公德是为了建立美满幸福的家庭
B. 遵守社会公德是成为一个有道德的人的最基本要求
C. 遵守社会公德是维护社会公共生活正常秩序的必要条件
D. 社会公德建设是精神文明建设的基础性工程，也是精神文明程度的“窗口”
[单项选择]公路运输中，长达笨重货物的运输根据其质量和长度的不同，分为（ ）个级别计价
A. 2
B. 3
C. 4
D. 5
[单选题]>钢坯内部的非金属夹杂物常见的颜色是( )。
A.黄色
B.灰色
C.白色
[单项选择]关于食管癌的淋巴转移特点，下列错误的是（）
A. 仅次于血行转移的转移途径
B. 上段食管癌常转移至锁骨上及颈淋巴结
C. 中下段多转移至气管旁、贲门及胃左动脉旁淋巴结
D. 各段均可向上或向下方的淋巴结转移
E. 约1／4病例的淋巴结转移是跳跃式
[判断题]当起重电气设备发生火灾时，应立即切断电源，并迅速用水灭火。（ ）
A.正确
B.错误
[单选题]变形缝两侧挡墙或顶部衬砌结构边缘处发生竖向错动,此损害类型为( )
A.接缝处错位
B.接缝开裂
C.接缝渗水
D.接缝处碎边
[单选题]空调系统在预冷模式下，新风调节门关闭，空调系统全回风运行，以使车厢内温度在(）条件下迅速冷却，直至车厢内温度达到设定值后自动切换到正常制冷状态。
A.AW0
B.AW1
C.AW2
D.AW3
E.略
F.略
[单选题]下列关于起重吊装施工安全规定，错误的是（）。
A.起重作业人员应穿防滑鞋、戴安全帽
B.高处作业时应按规定佩挂安全带
C.吊装作业应设警戒区，警戒区不得大于起吊物坠落影响范围
D.作业前应检查起重设备安全装置、钢丝绳、滑轮、吊索、卡环、地锚等
[不定项选择题]共用题干
Facts about Stroke
1 Every 45 seconds,someone in America has a stroke.Every 3. 1 minutes,someone
dies of one.Stroke killed an estimated 167,661 people in 2000 and is the nation's third
leading cause of death,ranking behind diseases of the heart and all forms of cancer.
Stroke is a leading cause of serious,long-term disability in the United States.
2 Stroke is a type of cardiovascular（心血管的）disease. It affects the arteries（动脉）
leading to and within the brain.A stroke occurs when a blood vessel that carries oxygen
and nutrients（营养物）to the brain is either blocked by a clot（凝块）or bursts. When
that happens,part of the brain cannot get the blood(and oxygen)it needs,so it starts
to die.
3 The brain is an extremely complex organ that controls various body functions.If a stroke
occurs and blood flow can't reach the region that controls a particular body function,that
part of the body won't work as it should,If the stroke occurs toward the back of the brain,
for instance,It's likely to result in some disablity involving vision.The effects of a stroke
depend primarily on the location of the obstruction（阻塞）and the extent of brain tissue
affected.
4 The American Stroke Association has identified several factors that increase the risk of
stroke.The more risk factors a person has,the greater the chance that he or she will have
a stroke.Some of these you can't control,such as increasing age,family health history,
race,and prior stroke.But you can change or treat other risk factors to lower your risk.
Factors resulting from lifestyle or environment can be modified with a healthcare provider's
help.Some of these include:high blood pressure,current smoking,heart disease,and
high red blood cell count.
5 A stroke can happen to anyone at any moment.In fact about 600,000 people have
strokes every year. For many years,there was no hope for those suffering a stroke.
However,recent breakthroughs have led to new treatments.For the treatments to work,
the person must get to a hospital immediately.
When a stroke occurs,the arteries leading to and within the brain______.
A.suffer from a stroke
B.will be affected
C.change their lifestyles
D.will take place
E.occurs at the back of his/her brain
F.controls various body functions
[单项选择]建设工程立项阶段建设监理工作的主要内容不包括( )。
A. 技术经济论证
B. 审核工程估算
C. 可行性研究咨询
D. 协助业主准备工程报建手续
[单项选择]甲状腺腺瘤的声像图特征是 （ ）
A. 圆形或椭圆形肿物，边界清，无包膜，呈低回声
B. 圆形或椭圆形肿物，边界清，有包膜，呈低回声，周围有晕征
C. 圆形或椭圆形肿物，边界不光滑，无包膜，呈低回声
D. 圆形或椭圆形肿物，边界不光滑，有包膜，呈强回声
E. 以上都不对
[单项选择]行政强制措施：指行政机关在行政管理过程中，为制止违法行为、防止证据销毁、避免危害发生、控制危险扩大等情形，依法对公民的人身自由实施暂时性限制，或者对公民、法人或者其他组织的财物实施暂时性控制的行为。
根据上述定义，下列属于行政强制措施的是：
A. 公安机关在刑事诉讼中限令犯罪嫌疑人在规定的期限内不得离开住处或者指定的居所
B. 交通管理部门对某货车散落在高速公路上的西瓜进行及时清理
C. 公安消防部门为了阻止火势蔓延而拆除与着火处相连的房屋
D. 医疗机构为防止某精神病人病情发作伤害他人而将其强制约束
[单选题]当从螺旋式熔断器的瓷帽玻璃窗口观测到带小红点的熔断指示器自动脱落时,表示熔丝()。
A.未熔断
B.已经熔断
C.无法判断已经熔断
[简答题]外国人约翰在中国境内无住所，同时在中国境内、境外机构担任职务，2020年8月5日来华，12月5日离开。期间因工作原因，曾于10月5日离境，11月5日返回。在计算个人所得税时，2020年约翰在中国境内居住天数为_______天。
[判断题]一般手用绞刀的齿距在圆周上是不均匀分布的。
A.正确
B.错误
[单项选择]下列选项中关于360浏览器的说法中不正确的是（）
A. 是最好用的浏览器
B. 体积轻巧功能丰富
C. 广告智能过滤、上网痕迹清理
D. 内建高速下载工具，支持多线程下载和断点续传
[多选题]灭火救援中使用的灭火剂有( )灭火剂等。[中]
A.水
B.泡沫灭火剂
C.一氧化碳
D.干粉灭火剂
[判断题]用万用表的电流档测量电流时，电表负载应并联。( )
A.正确
B.错误
[单项选择]The United States is not (thank goodness) a culturally homogeneous country. It consists of many distinct moral communities. On certain social issues, such as abortion and homosexuality, people don’t agree and probably never will—and the signal political advantage of the federalist system is that they don’t have to. Individuals and groups who find the values or laws of one state obnoxious have the right to live somewhere else.
The nationalization of abortion policy in the Supreme Court’s 1973 Roe v. Wade decision created a textbook example of what can happen when this federalist principle is ignored. If the Supreme Court had not stepped in, abortion would today be legal in most states but not all; pro-lifers would have the comfort of knowing they could live in a state whose law was compatible with their views. Instead of endlessly confronting a cultural schism that affects every Supreme Court nomination, we would see occasional local flare-ups in state legislatures or courtrooms.A. people may have different opinions about abortion.
B. controversial opinions on certain social issues are allowed.
C. some states are more obnoxious than others.
D. people can move from state to state if they like.
[单选题]下列何种蔬菜应直播栽培( )?
A.西红柿
B.西瓜
C.萝卜
D.甘蓝
[单选题] ()用于在黑暗.浓烟条件下观察火源及火势蔓延方向,寻找被困人员。
A. 热像仪
B. 有毒气体探测仪
C. 生命探测仪
D. 蛇眼可视仪
[判断题]在拉拽触电者脱离电源的过程中，救护人员用双手操作，这样子对救护人比较安全。
A.正确
B.错误
[单选题]搭设脚手架的场地应满足( )要求,回填土场地必须分层回填,逐层夯实、场地排水应顺畅、场地必须平整坚实。
A.回填土硬化处理
B.回填土铺设碎石子
C.搭设脚手架的地面标高宜高于自然地坪标高10mm~30mm
D.不应有积水
[填空题]（ ）是指轨道上左右两股钢轨顶面的高差。
[单项选择]溢流阀用来调节液压系统中的恒定（）。
A. 压力
B. 流量
C. 方向
D. 流速
[单选题]循环式冷却水主要靠（ ）的方法来散热。
A.排污
B.蒸发
C.泄漏
D.大量补水
[单选题]钢梁桥（含混合桥钢梁）木桥枕明桥面保养周期为( )。
A.每季
B.每半年
C.每月
D.每年
[单项选择]
强迫症：以强迫观念和强迫动作为主要表现的一种神经症。以有意识的自我强迫与有意识的自我反强迫同时存在为特征，患者明知强迫症状的持续存在毫无意义且不合理，却不能克制它反复出现。
根据上述定义，下列属于强迫症的是（）。
A. 模特小张最近为了保持苗条身材，强迫自己每次参加聚会都少吃东西，她感觉很痛苦
B. 过春节了，高三学习小陈一边想跟同学出去玩，一边为了考上好大学不得不强迫自己在家里认真看书
C. 林女士每次走出小区门口时，都会怀疑自家的煤气没有关掉或者大门没锁，于是再折返检查
D. 内向的小李很想对喜欢的女孩子表白，但又害怕被拒绝，整个晚上反复思考不能入眠
