热门试题:
[单选题]心电图检查中哪项表明有心肌坏死:
A.T波倒置
B.S-T段压低
C.S-T段呈弓背向上抬高
D.病理性Q波
E.T波高耸直立
[单选题]过电压作用于电气设备时可引起设备( )。
A.绝缘击穿
B.过载损坏
C.过热损坏
[判断题]正常情况下折返站设置站台岗其它车站高峰期设置站台岗,站台岗利用列车间隔巡视站台( )。
A.正确
B.错误
[判断题]著作权的保护范围限于作品的构思与表达中的表达部分 ( )
A.正确
B.错误
[单选题]1kV以下电力线路导线与拉线安装后的净空距离不应小于( )。
A.A.300mm
B.B.150mm
C.C.200mm
D.D.100mm
[判断题]累犯是指因犯罪而受过一定的刑罚处罚,在刑罚执行完毕或者赦免以后,于法定期限内又犯一定之罪的罪犯。
A.正确
B.错误
[单项选择]
一位著名的行为遗传学研究人员今天说:随着科学家们开始寻找乐观生活态度后面潜藏的脱氧核糖核酸,人们对快乐的研究深入到了遗传学领域。国立卫生研究院的行为遗传学家迪安•哈墨说:“很明显,有些基因使人们总的来说感到快乐一些或者悲伤一些。”但是他说,即便在庞大的人类基因组计划工作的能干的DNA搜寻人员找出仅仅一个快乐基因的可能性也是______的。涉及的基因也许多达几十个。使研究工作更不明确的将是环境在其中所起的作用。一些研究表明,即使像微笑这样简单的行为也能激发大脑中一些使人愉快的化学物质。这项研究表明,基因对安乐感的影响比抚养方式、社会经济状态和教育体制的影响更大,后几种情况“实际上没有影响”。哈默说:“快乐的高度可遗传性解决了社会学和心理学研究中长期存在的一个谜,即也许顺利的生活和社会经济上的成功对‘乐观向上的态度’几乎没有影响。换句话说,为什么金钱买不来幸福应该有其生物学上的原因。”哈默说,基因对于使人产生良好感觉的大脑化学物质多巴胺的调节至少可以用来很好地解释部分作用。
“有些基因使人们总的来说感到快乐一些或者悲伤一些”一句的意思是()。
A. 有些基因总的来说使人们既感到快乐,又感到悲伤
B. 有些基因总的来说使人们要么感到快乐,要么感到悲伤
C. 总的来说,有些基因使人们感到快乐,有些基因使人们感到悲伤
D. 总的来说,使人感到快乐和悲伤的原因是基因的影响
[单项选择]
Around the world more and more people are taking part in dangerous sports and activities. Now, there are people who look for an immediate excitement from a risky activity which may only last a few minutes or even seconds.
I would consider bungee jumping (蹦极) to be a good example of such an activity. You jump from a high place 200 meters above the ground with an elastic (弹性的) rope tied to your feet. You fall at up to 150 kilometers an hour until the rope stops you from hitting the ground. It is said that about 2 million people around the world have now tried bungee jumping. Other activities which most people around the world have now tried bungee include jumping from tall buildings and diving into the sea from the top of high cliffs.
Why do people take part in such activities as these Some psychologists suggest that it is because life in modern societies has become safe and boring. Not very long ago, people’s lives were constantly in danger. They had to go ou
A. offers an immediate excitement
B. is a fashion
C. makes one relaxed
D. makes one brave
[填空题]在汽油馏分中含有()的正构烷烃;柴油馏分中含有()的正构烷烃。
[判断题]安全工作的重点在班组,班组安全工作的重点在班组长。()
A.正确
B.错误
[单项选择]下列关于回流浸提法的陈述,错误的是()
A. 回流浸提分为回流热浸和回流冷浸
B. 回流冷浸装置的原理同索氏提取器
C. 回流冷浸溶剂能循环利用,不断更新
D. 回流冷浸溶剂用量小,浸出完全
E. 回流冷浸适用于热敏性中药的提取
[填空题]锯条在制造时,锯条上的全部锯齿按一定的规则(),排列成一定的形状,称为锯路。
[单选题]日常排查是指结合班组、岗位日常工作组织开展的经常性隐患排查,排查范围应覆盖日常生产作业环节,______不少于 1 次
A.每天
B.每周
C.每月
D.每季度
[判断题]通过与磁场方向平行的某一面积上的磁力线总线,称为通过该面积的磁通。( )
A.正确
B.错误
[判断题]门卫在守护工作中要熟记守护目标范围的基本情况,如工作人员使用的碗、筷、水杯的样式和型号,进出门手续以及印章、名片等。
[单选题]胸膜腔( )
A.左、右胸膜腔借肺门相通
B.经膈的三个裂孔通腹腔
C.经呼吸道与外界相通
D.内含少量气体
E.其最低部位是膈肋隐窝
[单项选择]冲击波超压会造成人员伤亡和建筑物的破坏,超压( )MPa也可使人体受到轻微伤害。
A. 0.02~0.03
B. 0.03~0.05
C. 0.05~0.10
D. 0.08~0.10
[简答题]’年5月15日,大同经神朔线、包西线神钟段、咸铜线至咸阳的k1771次列车,延安开车后在硬卧8车10号下清铺发现旅客何某持次日T907次列车(新空,张家口—张桥,经大同、神木北)大同至榆林硬座车票,经查其因身体不适自韩家楼开始此铺,要求继续使用至阎良,请处理。
[单项选择]理冲汤可治疗
A. 慢性盆腔炎湿热壅阻型
B. 慢性盆腔炎寒凝血滞型
C. 慢性盆腔炎肝郁脾虚型
D. 慢性盆腔炎气虚血瘀型
E. 慢性盆腔炎肾虚瘀滞型
[单项选择]具有解毒、除湿、利关节之功,善治梅毒或因梅毒服汞剂而致肢体拘挛的药物是:()
A. 鱼腥草
B. 土茯苓
C. 败酱草
D. 蒲公英
E. 垂盆草
[单项选择]Engineering students are (47) to be examples of practicality and rationality, but when it comes to my college education I am an idealist and a fool. In high school I wanted to be an electrical engineer and, of course, any (48) students with my aims would have chosen a college with a large engineering department, famous reputation and lots of good labs and research equipment. But that’’s not what I did.
I chose to study engineering at a small liberal-arts (文科) university that doesn’’t even offer a (49) in electrical engineering. Obviously, this was not a practical choice; I came here for more noble reasons. I wanted a broad education that would provide me with (50) and a value system to guide me in my career. I wanted to open my eyes and expand my vision by interacting with people who weren’’t studying science or engineering. My parents, teachers and other adults praised me for such a sensible choice. They told me I was wise and (51) beyond my 18 years, and I believed them.
I
[多项选择]不宜用糖皮质激素的情况是
A. 青光眼
B. 严重的高血压
C. 严重的中毒性感染
D. 未能用抗菌药物控制的真菌感染
E. 较重的骨质疏松
[多选题]“人才贷”是指广西农村合作金融机构向自然人()发放的用于科技成果转化和创新创业活动等资金需求的贷款。
A.服务辖区内全职工作的高层次人才
B.优秀专家
C.八桂学者
D.特聘专家
E.211、985在校大学生
[单选题]CDZ53登高平台消防车电液比例阀的进油联设有系统压力限制阀。
A.对
B.错
[单选题]在常温常压下,1,3-丁⼆烯的沸点是( )℃。
A. 3.45
B. 4.45
C. -3.45
---------------
[单选题]资本主义商业利润的实质是( )
A. 商品贱买贵卖的差额
B. 从事商品销售的劳动创造的价值
C. 商品批发价格和零售价格之间的差额
D. 产业工人在生产过程中的剩余劳动所创造的剩余价值的一部分
[多选题]燃烧能够发生需要燃烧三要素同时存在,三要素缺少任何一个,燃烧都不能发生或持续。下列属于火的三要素的是()。
A.氧化剂
B.可燃物
C.点火源
D.助燃剂
[单项选择]下列不属于管理信息系统(MIS)功能的是()。
A. 降低成本
B. 提高生产效率
C. 精简工作人员
D. 建立正确的远景目标
[单选题]一个人总是反复检查是否锁了门或不停地洗手,这属于下面哪一种心理障碍( )
A.恐怖症
B.一般性焦虑障碍
C.抑郁症
D.强迫症
[判断题]电梯故障发生时,为争取时间,救援行动可以不在电梯公司技术人员的指导下进行。( )
A.正确
B.错误
[填空题]工务段应对轨检车查出的Ⅲ级超限处所及时处理,对查出的Ⅳ级超限处所立即( )并及时处理。
[判断题]平面控制网在框架平面控制网(CPO)的基础上分三级布设
A.正确
B.错误
[填空题]
{{B}}Section A{{/B}}
When Roberto Feliz came to the USA from the Dominican
Republic, he knew only a few words of English. Education soon became a
{{U}} (47) {{/U}} "I couldn’t understand anything," he said. He
{{U}} (48) {{/U}} from his teachers, came home in tears, and thought
about dropping out.
Then Mrs. Malave, a bilingual educator,
began to work with him while teaching him math and science in his {{U}} (49)
{{/U}} Spanish. "She helped me stay smart while teaching me English," he
said. Given the chance to demonstrate his ability, he {{U}} (50) {{/U}}
confidence and began to succeed in school.
Today, he is a
{{U}} (51) {{/U}} doctor, runs his own clinic, and works with several
hospitals. Every day, he uses the language and academic skills he {{U}} (52)
{{/U}} through bilingual education to treat his patients.
Roberto’s story is just one of {{U}} (53) {{/U}} success stories.
Research has shown that bilingual educatio
[单项选择]治疗强心甙所致窦性心动过缓和房室传导阻滞最佳药物是
A. 奎尼丁
B. 异丙肾上腺素
C. 胺碘酮
D. 阿托品
E. 维拉帕米
[单项选择]某质点的位移随时间的变化关系是s=4t+2t²,s与t的单位分别是m、s,则质点的初速度和加速度分别为()
A. 4m/s,2m/s²
B. 0,4m/s²
C. 4m/s,4m/s8
D. 4m/s,0