| It is generally believed that the
greatest damage of old age is the loss of mental faculties. With the near
doubling of life expectancy in the past century has come a mixed blessing. A few
great thinkers and artists remained productive in their later years—Galileo,
Monet, Shaw, Stravinsky, Tolstoy—but even they were not what they bad been in
their primes. In sciences, the boom falls sooner still: "A person who has not
made his great contribution to science before the age of 30 will never do so,"
said Einstein. Imagine if we could transplant old brains into younger bodies: would our minds stay young, or would we be senile teenagers, scaling mountains and skateboarding at 120, but forgetting where we put the car’s keys. Is the brain uniquely vulnerable to the ravages of time Can anything be done Indisputable evidence fr A. can counter age-related mental decline in a comprehensive way B. offers benefits directly bound up with that kind of exercise C. should be paired with physical exercise for maximum benefit D. is comparable to physical activities in term of its importance to overall health [判断题]进行侦察、攻坚及非常规灭火救援行动时，必须由现场指挥员带队。 ( )
A.正确 B.错误 [单项选择]下列原则中，哪一项不属于刑法的基本原则？（） .
A. 罪刑法定原则 B. 适用刑法人人平等原则 C. 罪刑相适应原则 D. 数罪并罚原则 [单选题]生产、经营、购买、运输或者进口、出口易制毒化学品的单位,应当于每年()前向许可或者备案的行政主管部门和公安机关报告本单位上年度易制毒化学品的生产、经营、购买、运输或者进口、出口情况。
A.1月31日 B.2月31日 C.3月31日 [单选题]ABI001 下列属于计算机必备基本组成部分的是( )。
A. 中央处理器 B. 内存条 C. 显卡 D. 光驱 [单项选择]井下上山巷道倾角大于（）时，耙装机司机前方应打护身点柱并加设挡板，防止滚石伤人。
A. 7° B. 10° C. 15° D. 20° [单选题]混凝土枕伤损中，（ ）不为轨枕失效标准。
A.纵向水平裂缝基本贯通(缝宽大于0.5mm) B.承轨槽压溃,深度超过2mm C.挡肩破损,接近失去支承能力(破损长度超过挡肩长度的1/2) D.明显折断 [判断题]为防突然来电，当验明检修设备确已无电压后，应立即将设备短接，并三相接地。
A.正确 B.错误 [单项选择]腹腔穿刺抽出不凝固血液（）
A. 炎症性病变 B. 穿孔性病变 C. 出血性病变 D. 梗阻性病变 E. 绞窄性病变 [判断题]预留轨缝应考虑当地最高、最低轨温情况。( )
A.正确 B.错误 [判断题]作业人员应了解机具（施工机具、电动工具）及安全工器具相关性能，熟悉其使用方法。
A.正确 B.错误 [多选题]对溺水者的人工呼吸方法正确的描述是( )。
A.口对口吹气最佳 B.有节律的每分钟12-16次吹气 C.同时进行胸外心脏按摩 D.人工呼吸进行的次数越多越好 [单选题]影响药物吸收的主要生理因素叙述错误的是
A.pH低有利于碱性药物吸收 B.药物在循环系统(血液循环、淋巴循环)运行速度的影响 C.胃空速率减小时，有利于弱酸性药物在胃中吸收 D.影响胃空速率的因素有胃内液体的量、空腹与饱腹等 E.当胃空速率增大时，多数药物吸收快 [单选题]反应器按基本结构进行的分类中不包含（ ）。
A.浮头式反应器 B.管式反应器 C.釜式反应器 D.固定床反应器 我来回答: 提交
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