实行民族区域自治是适合我国国情的必然选择，是由我国的历史特点和现实情况决定的。下列选项中，正确支撑这一论点的论据是（）。
①我国统一的多民族国家的历史传统
②我国“大杂居、小聚居”的民族分布特点
③我国各民族在长期奋斗中形成的相互依存的民族关系
④我国法律法规对各民族成员基本政治权利的不同规定
| The physicians in a hospital form the
core of the medical staff. But they couldn’t provide effective medical care to
their patients without the help of numerous other medical employees. Form the
viewpoint of the patients, the nursing staff is particularly important. Nurses
are usually in close contact with patients as long as they are in the
hospital. A nurse does not study for as many years as a doctor. However, each must be equally dedicated. Caring for sick persons requires a great deal of patience and concern. Most nurses work long days, and they often must work at odd hours or during the night. Under the supervision of the head nurse, the nursing staff must provide nursing services on a 24-hour basis and attend’ to patients’ needs. This responsibility continues around the clock, and so nurses must work in sh A. Most nurses work long days. B. They don’t treat patients for illness and injury. C. Caring for sick patients requires patience and concern. D. They are not dedicated. [单项选择]What will the man do if the woman’s package arrives
A. Call her room B. Send it to her C. Call her cell phone D. Leave it for her [填空题]自控器设置位置 （ ）符合产品技术要求。
[填空题]
There is a place in the Atlantic Ocean where ships and airplanes seem to disappear more often than anywhere else on Earth. It seems to form a triangle between Miami, Bermuda, and the ocean east of Puerto Rico. This place is called the Bermuda Triangle. Over 100 planes and ships have been lost there since 1945. Over 1,000 people have disappeared. It is almost as if the lost planes had gone into a hole in the sky, as if the ships had been suddenly sucked down into a huge whirlpool. The strangest thing is that nothing is ever found: no bodies in the water or washed up on the beach. The biggest single loss of planes happened in December of 1945. Five Navy planes from Florida were flying together. There were 14 men in them. They radioed back to their base that their flying instruments were not working, they did not know where they were. The base radioed back to them to follow the sun west. They answered that they could not se [填空题]判断下列叙述是否正确。
①在数据库系统中，数据独立性指数据之间的相互独立，互不依赖。 ②SQL语言的视图定义和视图操作功能不支持逻辑数据的独立性。 ③SQL语言中不提供显式地使用索引的功能，支持了物理数据的独立性。 ④用户对“脏数据”的读出是由于数据库完整性规则受到了破坏。 ⑤在数据库系统中，数据的安全性是指保护数据以防止被末授权用户的蓄意或者无意使用。 ⑥实体完整性规则指主关键字值的任何组成部分都不可以是空值；参数完整性规则则不允许引用不存在的实体(即元组)。 ⑦在数据库系统中，数据的完整性是指数据的正确性和有效性。 ⑧“授权”是数据库系统中采用的完整性措施之一。 ⑨事务处理(Transaction)是数据库运行的基本单位。如果一个事务处理成功，则全部数据应更新和提交；如果失败，则已做的全部更新被恢复成原状，好像整个事务处理未进行过一样。这样使数据库保持了一致性。 ⑩对数据库的查找、增添、删除、修改等操作都需由数据库管理员进行完整性定义和完全性授权，由数据库系统具体执行。 [判断题]井下、坑道救援时，应对井口、侧壁进行支撑、加固，不得停靠车辆或聚集大量人员，严禁大型机械在周边行进、作业。( )
A.正确 B.错误 [填空题]《行车设备检查（施工）登记簿使用管理办法》规定：作业人员必须严格按规定和要求，认真、正确填记。车站行车人员（调度员）要督促作业人员正确填记，如发现登记内容不标准、不正确或有（ ） 处以上涂改，不得签认，应在登记内容处加盖“作废”章，重新登记。
[多选题]《高铁中型及以上车站服务质量规范》规定，（）应显示列车编组的前后顺位信息。
A.站台屏 B.进站通道屏 C.候车引导屏 D.出站屏 [多选题]与现钞清点相关的业务类型包括（ ）
A.、现金收入； B.、现金付出； C.、假币收缴； D.、现金清分。 [单项选择]为衔接不同运输方式、不同运输环节而设立的物资存储方式称为（）
A. 安全储备 B. 中转储备 C. 仓库存储 D. 周转储备 [判断题]为加快钻取芯样的速度，应采用较高的进钻速度。
[多选题] 根据《坚强局部电网规划建设方案》,坚强局部电网目标重要用户原则上应包含政府确定的(____)。
A.特级重要用户 B.一级重要用户 C.全部二级重要用户 D.部分二级重要用户" [单选题]根据《关于推动银行业和保险业高质量发展的指导意见》，在保持（ ）地位总体稳定的前提下，因地制宜对农村信用联社和农村合作银行实施股份制改造。
A.支农支小 B.服务三农 C.县域法人 D.独立法人 [多选题]根据误差的性质可分为( )。
A. 系统误差 B. 随机误差 C. 粗大误差 D. 示值误差 [填空题]_（）__是将先进的通信和操作处理等物联网技术应用于农业领域，由信息、摇杆技术与生物技术支持的定时、定量实施耕作与管理的生产经营模式。
[单项选择]在机械制图中，局部视图的位置应尽量配置在（）上，并与原视图保持投影关系。
A. 任意方向 B. 主视图投影方向 C. 投影相厨方向 D. 投影方向 [单选题]机动链锯不能切割的材料是____。
A.木结构 B.木制品 C.塑料制品 D.钢结构 [单选题]运输规划指根据运营公司发展与线网建设规划，基于线网发展客流预测，分析线网运输能力水平及运能提
升瓶颈，它以_____为核心。
A.运输组织 B.乘客服务 C.社会效益 D.经济效益 [单项选择]MRH-S100综合掘进机喷雾泵二联换向阀设定的压力为（）
A. 15.7Mpa B. 20.6Mpa C. 9.8Mpa D. 2.5Mpa [多项选择]以下哪组传染病是丙类传染病？（）
A. 流行性感冒、流行性腮腺炎、风疹 B. 急性出血性结膜炎、麻风病 C. 流行性和地方性斑疹伤寒、黑热病 D. 除霍乱、细菌性和阿米巴性痢疾、伤寒和副伤寒以外的感染性腹泻病 [多项选择]如果其他因素不变，一旦折现率提高，则下列指标中其数值将会变小的是( )。
A. 净现值率 B. 净现值 C. 内部收益率 D. 获利指数 [单项选择]在保税物流园区内，可以开展的业务为：
A. 商品展示 B. 商业零售 C. 加工制造 D. 翻新拆解 [简答题](45395)轨枕的功用是什么？（5分）(1.0分)
[多项选择]直流输电工程降压运行主要在下列哪几种情况下。（）
A. 由于降低直流功率需降低电压 B. 由于绝缘问题需降低电压 C. 由于无功功率控制需降低电压 D. 由于调节谐波量需降低电压 [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." When the levels of cortisol go high,the hippocampus A.may expand. B.may shrink. C.may disappear. D.may function better. [多选题]根据《配电安规》，下列选项中属于工作负责人的安全责任有（ ）。
A.确认工作票上所列安全措施正确完备 B.检查工作票所列安全措施是否正确完备，是否符合现场实际条件，必要时予以补充完善 C.监督工作班成员遵守本规程、正确使用劳动防护用品和安全工器具以及执行现场安全措施 D.监督被监护人员遵守本规程和执行现场安全措施，及时纠正被监护人员的不安全行为 [判断题]游标卡尺测量前不需要做什么准备工作。
A.正确 B.错误 [单项选择]急性肾炎与急进性肾炎的临床表现相似之处为
A. 水肿、血尿、高血压 B. 中重度贫血 C. 持续少尿 D. 持续无尿 E. 肾功能迅速恶化 [单项选择]1 Pa=1（）
A. 牛顿/平方米 B. 牛顿/平方厘米 C. 千克（力）/平方厘米 [单选题]有关螺旋 CT的检查优势,以下错误的是
A.缩短扫描时间 B.明显提高空间分辨力 C.减少患者受辐射剂量 D.容积扫描 E.减少图像的运动伪影 我来回答: 提交
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