热门试题:
[单项选择]中国药典规定需要检査杂质“硒”的药物是()。
A. 肾上腺素
B. 对乙酰氨基酚
C. 吗啡
D. 醋酸地塞米松
E. 阿司匹林
[填空题]压力蒸汽灭菌效果的监测方法有:()监测法、()监测法及()监测法3种。
[判断题]短期融资券采用记账方式,在中央国债登记结算有限责任公司登记托管,中央结算公司负责提供有关服务。( )
[单项选择]某企业委托券商代理发行股票5000万股,每股面值1元,每股发行价格6元。按发行价格的1%向券商支付发行费用,发行股票期间冻结的利息收入为50万元。该企业在收到股款时,应记入“资本公积”科目的金额为()万元。
A. 24650
B. 24700
C. 24750
D. 25000
[单选题]下岗休息人员不得离开门岗区域。
A.可以
B.不得
C.允许
D.禁止
[判断题]公民特定资格的考试依法由行政机关或者行业组织实施,公开举行()
A.正确
B.错误
[判断题]平视显示着陆系统英文缩写视HUDLS。
A.正确
B.错误
[单选题]转K2、转K6型转向架在下心盘中安装( )心盘磨耗盘,可以减少上下心盘的磨耗。
A.铸铁
B.不锈钢
C.尼龙
D.铸钢
[判断题]发电机失磁后,就不再发出有功功率。
A.正确
B.错误
[不定项选择题]共用题干
第二篇
Sleep Lets Brain File Memories
To sleep.Perchance to file?Findings published online this week by the proceedings of the National Academy of Sciences further support the theory that the brain organizes and stows memories formed during the day while the rest of the body is catching zzz's.
Gyorgy Buzsaki of Rutgers University and his colleagues analyzed the brain waves of sleeping rats and mice. Specifically,they examined the electrical activity emanating(散发)from the somatosensory(耳、目、口等以外的)neocortex(新大脑皮层)(an area that processes sensory information) and the hippocampus(海马),which is a center for learning and memory. The scientists found that oscillations in brain waves from the two regions appear to be intertwined.So-called sleep spindles (bursts of activity from the neocortex)were followed tens of milliseconds later by beats in the hippocampus known as ripples.The team posits that this interplay between the two brain regions is a key step in memory consolidation.
A second study,also published online this week by the proceedings of the National Academy of Sciences,links age-associated memory decline to high glucose levels.
Previous research had shown that individuals with diabetes(糖尿病,多尿症)suffer from increased memory problems.In the new work,Antonio Convit of New York University School of Medicine and his collaborators studied 30 people whose average age was 69 to investigate whether sugar levels,which tend to increase with age,affect memory in healthy people as well.The scientists administered recall tests, brain scans(细看,审视,浏览,扫描)and glucose tolerance tests, which measure how quickly sugar is absorbed from the blood by the body's tissues.Subjects with the poorest memory recollection,the team discovered,also displayed the poorest glucose tolerance.In addition,their brain scans showed more hippocampus shrinkage than those of subjects better able to absorb blood sugar.
" Our study suggests that this impairment(损害、损伤)may contribute to the memory deficits (赤字、不足额)that occur as people age."Convit says."And it raises the intriguing possibility that improving glucose tolerance could reverse some age-associated problems in cognition."Exercise and weight control can help keep glucose levels in check(阻止、制止),so there may be one more reason to go to the gym.
According to the last paragraph,what is the ultimate reason for going to the gym?
A.To prevent hippocampus shrinkage.
B.To control weight.
C.To exercise.
D.To control glucose levels.
[单项选择]煤粉爆炸的条件是:()
A. 着火点、着火温度、O2含量、气体压力;
B. 煤粉温度、O2含量、气体压力、煤粉浓度;
C. 煤粉浓度、温度、火源、高速扩张;
D. 火源、O2含量、煤粉达到爆炸浓度。
[多选题]消费支出可以进一步分为()。
A.耐用消费品支出
B.非耐用消费品支出
C.劳务支出
D.政府购买支出
E.政府转移支出
[单项选择]建设工程常用网络计划中,双代号网络图中虚箭线表示()。
A. 自由消耗程度
B. 工作的持续时间
C. 工作之间逻辑关系
D. 非关键工作
[判断题]复示信号机以无显示为定位。( )
A.正确
B.错误
[多项选择]《水污染防治法》关于防治地表水污染的规定包括( )。
A. 农业灌溉渠道排放污水,应保证其下游最近灌溉取水点水质符合农灌标准
B. 向水体排放含病原菌体废水应消毒达标后排放
C. 禁止将含有汞、镉、砷等可渗性剧毒废渣向水体排放、倾倒或直接埋入地下
D. 船舶储运油类或毒物,必须有防溢液、防渗流措施
E. 禁止企业利用渗坑、渗井、裂缝和溶洞倾倒含有有毒物质的废水
[多项选择]以下哪种是滚动轴承常见的损坏形式()。
A. 磨损
B. 疲劳剥落
C. 裂纹
D. 断裂
[判断题]1983年,国务院办公厅下发《关于军队离休干部移交地方管理问题的通知》后,军休干部开始有计划、成批次移交公安部门管理。
A.正确
B.错误
[单项选择]Life is more important than the pressures and stresses that we place on ourselves over work and other commitments.
A. appointments
B. arrangements
C. obligations
D. devotions
[单选题]()禁止停留机车车辆。
A.安全线及避难线
B.到发线
C.牵出线
D.岔线
[单项选择]Directions: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the conversation and the questions will be spoken only once. After each question there will be a pause. During the pause, you mustread the four choices marked A, B, C and D, and decide which is the best answer. Then mark the corresponding letter on Answer Sheet 2 with a single line through the centre.
A. She goes home for lunch.
B. She spends her time shopping.
C. She gets interested in what she is reading.
D. She doesn’t wake up in time.
[单选题]下列哪项关于结核性胸膜炎特点的描述是错误的
A.多见于儿童
B.起病多缓慢
C.可有结核中毒症状
D.X线胸片可呈肋膈角消失或外高内低影
E.X线胸片除胸水影外,还应有肺内结核灶
[单项选择]
Old And Active
It is well-known that life expectancy is longer in Japan than in most other countries. A (1) report also shows that Japan has the longest health expectancy in the world. A healthy long life is the result of the (2) in social environment.
Scientists are trying to work (3) exactly what keeps elderly Japanese people so healthy, and whether there is a lesson to be (4) from their lifestyles for the rest of us. Should we (5) any changes to our eating habits, for instance, or go jogging each day before breakfast Is there some secret (6) in the Japanese diet that is particularly (7) to the human body
Another factor (8) to the rapid population aging in Japan is a decline in birthrate. Although longer life should be celebrated, it is (9) considered a social problem. The number of older people had (10) in th
A. contributing
B. helping
C. resulting
D. causing
[单选题]投产送电时一次设备检查工作每小组应至少有( )人及以上工作人员进行,加强监护。
A.1
B.2
C.3
D.4
[多选题]班组长管理经验交流主要包括( )。
A.与外部同行业公司的交流
B.与外部不同行业公司的交流
C.公司内部单位之间的交流
D.单位内部不同作业区之间的交流
E.作业区内部不同班组之间的交流
[单项选择]被评估对象为2007年购入的一台设备,评估基准日该设备与目前相同生产能力的新型设备相比,需多用操作工人6人,每年多耗电50万度。如果每名操作工人每年的工资及其他费用为3万元,每度电的价格为0.8元,设备尚可使用4年,折现率为10%,所得税税率为25%,不考虑其他因素,则该设备的功能性贬值最接近于( )万元。
A. 150
B. 138
C. 76
D. 120
[单选题]关于爆炸,下列不正确的说法是()。
A.爆炸的特点是具有破坏力,产生爆炸声和冲击波
B.爆炸可分为物理爆炸和化学爆炸
C.爆炸是一种极为迅速的物理和化学变化
[单项选择]
在航次租船条件下,除货物装卸费用和垫舱物料依承租双方约定外,出租人需负担()等。
Ⅰ.燃料费;
Ⅱ.物料费;
Ⅲ.淡水费;
Ⅳ.港口使费。
A. Ⅰ,Ⅱ,Ⅳ
B. Ⅰ~Ⅳ
C. Ⅱ~Ⅳ
D. Ⅰ~Ⅲ
[单选题]从洋务运动到五四运动前后,近代化在中国曲折发展。在中国近代化的发展历程中,下列口号或主张出现的先后顺序是( )。①自强、求富②民主、科学③三民主义④变法维新
A.①②③④
B.②③①④
C.①②④③
D.①④③②
[单选题]当电压等级为500kV时,主牵引机额定牵引力的系数为( )。
A.0.14~0.20
B.0.20~0.33
C.0.14~0.20
D.0.20~0.45
[多选题]根据住房城乡建设部有关规定,企业施工现场带班人员包括( )。
A.企业法定代表人
B.总经理
C.主管质量安全和生产工作的副总经理
D.项目副经理
E.总工程师、副总工程师以及工程项目的项目负责人
[单项选择]不能解释产业内贸易现象的理论有()
A. 重叠需求理论
B. 要素禀赋理论
C. 规模经济理论
[单选题] 对造成人身伤害和财产损失的,告知受害人向精神病人的()请求赔偿
A. 监护人
B. 父母
C. 管属公安机关
D. 管辖街道
[单选题]大型养路机械各机械车在封锁区段独自运行时,续行间隔不得小于()m。
A.100
B.200
C.300
D.500
[单项选择]客户说:同样问题,“别人可以索赔他却不行”他在诉求什么?()
A. 不平等待遇
B. 被骗感觉
C. 心理不平衡
D. 不被尊重
E. 不被理解
[单选题]承载继电保护、安全自动装置业务的专用通信线缆、配线端口等应做好标识。
A.正确
B.错误
C.
D.
E.略
F.略
[单选题]社会历史观的基本问题是( )
A.生产力和生产关系的问题
B.社会规律的客观性和主观能动性的关系问题
C.社会存在和社会意识的关系问题
D.唯物主义和唯心主义的斗争问题
[单选题]下列关于同期资料准备的各项说法中,符合规定的是( )。
A.企业关联交易中,年度关联交易金额中金融资产转让金额超过 5000 万元,需要准备本地文档
B.企业关联交易中,年度关联交易金额中其他关联交易合计超过 3000 万元,需要准备本地文档
C.企业关联交易中,年度关联交易金额中无形资产所有权转让金额超过 5000 万元,需要准备本地文档
D.企业年度关联交易总额超过 10 亿元,需要准备主体文档
[单选题]根据《发电厂汽水管道应力计算技术规定》(DL/T5366-2014)第5.2.4条规定,背压式汽轮机排汽管道的设计压力应取排汽的(),且不应小于0.lMPa;设计温度应取排汽的最高工作温度。
A.运行中可能出现的最高持续工作压力
B.额定工作压力的105%
C.额定工作压力
D.最高工作压力