热门试题:
[判断题]商业信息的好坏可以从关键字、信息标题、产品图片、产品描述等方面来分析。()
[单选题]患者在诊疗活动中受到损害,医疗机构及其医务人员有过错的,由( )承担赔偿责任
A.医务人员
B.医疗机构
C.医疗机构负责人
D.医务人员和医疗机构
[判断题]昆明地铁正线现场显示绿灯,表示处于联锁模式,进路中至少一组道岔开通反位,允许通行。
A.正确
B.错误
[多项选择]替代品的威胁包括( )等方面。
A. 行业内竞争者的数量
B. 企业在供应商的战略地位
C. 客户转向替代品的难易程度
D. 替代品在价格上的竞争力
E. 替代品质量和性能的满意度
[单项选择](2007)在双缝装置实验中,当入射单色光的波长减小时,屏幕上千涉条纹的变化情况是:()
A. 条纹变密并远离屏幕中心
B. 条纹变密并靠近屏幕中心
C. 条纹变宽并远离屏幕中心
D. 条纹变宽并靠近屏幕中心
[单项选择]( )的重点在于通过事故发生前所作的财务安排,来解除事故发生后给人们造成的经济困难和精神忧虑。
A. 控制型风险管理技术
B. 财务型风险管理技术
C. 选择风险管理技术
D. 风险评价
[单项选择]当学生处于怒火中烧时,我们可以采用()来帮助他冷静下来。
A. 逆境性思维
B. 发散性思维
C. 创造性思维
[单项选择]
What Is the Coolest Gas in the Universe
What is the coldest air temperature ever recorded on the Earth Where was this low temperature recorded The coldest recorded temperature on Earth was -91℃ which
(51) in Antarctica in 1983.
We encounter an interesting situation when we discuss temperatures in
(52) . Temperatures in Earth orbit actually range from about +120~C to -120~C. The temperature depends upon
(53) you are in direct sunlight or shade. Obviously, -120℃ is colder than our body can safely endure. Thank NASA science for well-designed space
(54) that protect astronauts from these temperature extremes.
The space temperatures just discussed affect only our area of the solar
(55) . Obviously, it is hotter closer to the Sun and colder as we travel away from the Sun. Astronomers estimate temperatures at Pluto are about -210℃. How cold is the lowest estimated temperature in the entire uni
A. ultra-small
B. ultra-fast
C. ultra-hot
D. ultra-cold
[单项选择]Der Chef überlegt in seinem mit Computern voll ________ Büro, ob der neue Plan gelingen knnte.
A. stellenden
B. gestellenen
C. gestellten
D. zu stellenden
[不定项选择题]共用题干
第二篇
High Stress May Damage Memory
According to a report issued in May 1998,elderly people who have consistently high
blood levels of cortisol (皮质醇)don't score as well on memory tests as their peers with
lower levels of the stress hormone. What's more,high levels of cortisol are also associated
with shrinking of the hippocampus(海马区),a region of the brain that plays a key role in
learning and memory.
The findings suggest that even cortisol levels in the normal,"healthy"range can
actually accelerate brain aging.
The study results"now provide substantial evidence that long-term exposure to adrenal
(肾上腺的)stress hormones may promote hippocampal aging in normal elderly humans",
write Nada Porter and Philip Landfield.Cortisol is a hormone released in response to stress
by the adrenal glands(腺),which sit on top of the kidneys(肾).
Over a 5-to 6-year period,Dr. Sonia Lupien and his colleagues measured 24-hour
cortisol levels in 51 healthy volunteers,most of whom were in their 70s.
The researchers tested the volunteers' memory on six people in the increasing/high
category and five people in the decreasing/moderate group.The groups did not differ in
tests of immediate memory,but the increasing/high cortisol group had other memory
problems compared with those in the decreasing/moderate group.
The researchers also found that the total volume of the hippocampus in those in the
increasing/high group was 14% lower than those in the decreasing/moderate group,
although there were no differences in other brain regions.
The results suggest that“…brain aging can be accelerated by levels of adrenal
hormones that are not generally regarded as pathological(病态的)and that variation within
this normal range is related to variation in the rate of brain aging",write Porter and
Landfield."This further suggests that chronic stress may accelerate the worsening of the
hippocampus."
Which of the following plays a key role in one's learning and memory?
A.The kidneys.
B.The adrenal glands.
C.The stress hormone.
D.The hippocampus.
[单项选择]房地产营销目标分为()和()两类。
A. 财务目标、实际销售目标
B. 财务目标、预计销售目标
C. 预计销售目标、市场占有率目标
D. 市场占有率目标、实际销售目标
[单选题]煤矿拒绝、阻碍煤矿安全监察机构及其人员现场检查的,给予警告,可以并处5万元以上10万元以下的罚款,情节严重的,责令()。
A.矿长停职
B.矿长写出检查
C.停产整顿
[单项选择]尿毒症患者贫血的最主要原因是()。
A. 失血
B. 促红细胞生成素缺乏
C. 缺铁
D. 低蛋白血症
E. 毒素抑制红细胞生成
[单选题]液压泵的输油量和密封容积变化的大小及单位时间变化次数( )。
A.成正比
B.成反比
C.成倍数
D.成比例
[单项选择]
M0型和M1型急性髓细胞性白血病的显著区别在于()
A. 贫血
B. 血小板减少
C. 白血病细胞内可见Auer小体
D. 原始粒细胞过氧化物酶染色可呈阳性反应
E. CD34阳性
[判断题]481.功频电液调节中的“反调现象”的产生从根本上讲是因为转速信号变化快于功率信号的变化。
A.正确
B.错误
[判断题]( )起吊重物(如钢板)出现偏斜时,可在重物上站人以保持其平衡。
A.正确
B.错误
[多选题]自动喷水灭火系统的设置场所的火灾危险等级的划分中,严重危险级又分为()。
A. Ⅰ级
B. Ⅱ级
C. Ⅲ级
D. Ⅳ级
E. Ⅴ级
[填空题]遗体的运送、防腐、整容、存放、火化等,一律由()等殡仪服务单位承办。
[多项选择]针对有效供给不足、需求相对过剩造成的通货膨胀,着力增加生产性供给,主要措施有( )。
A. 提高各种税率
B. 减税
C. 削减政府开支
D. 稳定物价
E. 限制货币增长率
[判断题]( )动车组火灾事故应急处置,应按照“统一指挥、快速反应、正确处置、站车协同、尽快开车”的原则。
A.正确
B.错误
[单选题] 一般金属表面膜有孔隙,孔隙处的金属表面电位相对()。
A.较高
B.较低
C.与其他处一样
D.为零
[单项选择]免疫活性细胞发生、分化、成熟的场所是()。
A. 胸腺和淋巴结
B. 肺和胸腺
C. 肝脏
D. 骨髓和胸腺
E. 脾脏和淋巴结
[单选题]1.78.第78题
停电设备的各端,若无法观察到停电设备的断开点,应有能够反映设备运行状态的( )等指示。
A.电气
B.机械
C.电气和机械
D.声音
[单项选择]
男性,65岁,反复咳嗽、咳痰10年余,常年服药可控制,但近一周内加重,咳剧痰多,呈脓性样、黏稠,不易咳出,伴低热(37.5℃)。
该病人最可能的诊断是( )
A. 肺脓肿
B. 肺癌
C. 肺炎
D. 肺结核
E. 慢性支气管炎急性发作
[单选题]贯彻新发展理念,建设现代化经济体系,必须坚持质量第一、效益优先,以_______为主线。
A..转变发展方式
B..优化经济结构
C..供给侧结构性改革
D..转换增长动力
[单选题]盘查中,公安民警查验证件时应当将证件举至约同( )高。(1.0分)
A.头
B.眼
C.肩
D.胸
[单项选择]()是全国集中发放一代居民身份证的时间。
A. 1984年至1990年
B. 1985年至1990年
C. 1984年至1991年
D. 1985年至1991年
[单选题]在带电设备周围禁止使用钢卷尺皮卷尺和线尺(夹有金属丝者)进行测量。
A.正确
B.错误
C.
D.
E.略
F.略
[判断题]当现场防护员与驻调度所(驻站)联络员联系中断时,现场防护员应立即通知车间主任停止作业,下道避车,必要时将线路恢复到准许放行列车的条件。
A.正确
B.错误
[单选题]HXD2型电力机车在起动状态下轴重转移率( ),机车具有轴重转移的持续电气补偿功能。
A.≤10%
B.≤20%
C.≤30%
[填空题]新大纲要求在语文教学中实施()、()、()。
[简答题]73. 25HZ相敏轨道电路有哪些器材组成?
[判断题]因桥上维修作业与大修施工而加固后的混凝土桥梁钢支架人行道,用于支承放置的混凝土(桥)枕与木(桥)枕的钢支架不少于2个。
A.正确
B.错误