You have been badly injured in a car accident. It is necessary to give you a blood transfusion (输血) because you lost a great deal of blood in the accident. However, special care must be taken in selecting new blood for you. If the blood is too different from your own, the transfusion could kill you.
There are four basic types of blood: A, B, AB and O. A simple test can indicate a person’s blood type. Everybody is born with one of these four types of blood. Blood type, like hair color and height, is inherited from parents.
Because of substances contained in each type, the four groups must be transfused carefully. Basically, A and B cannot be mixed. A and B cannot receive AB, but AB may receive A or B. O can give to any other group; hence, it is often called the universal donor (通用献血者). For the opposite reason, AB is sometimes called universal recipient. However, because so many reactions can occur in transfusions, patients usually receive only salt or plasma
A. it may save you
B. it has no effect
C. it could kill you
D. it is very safe
| Questions 56-60 are based on
the following passage. The Frugal Gourmet Cooks American by Jeff Smith Our real American foods have come from our soil and have been used by many groups—those who already lived here and those who have come here to live. The Native Americans already had developed an interesting cuisine using the abundant foods that were so prevalent. The influence that the English had upon our national eating habits is easy to see. They were a tough lot, those English, and they ate in a tough manner. They wiped their mouths on the tablecloth, if there happened to be one, and they ate until you would expect them to burst. European travelers to this country in those days were most often shocked by American eating habits, which included too much fat and too A. American food is better than foods from other countries B. American food is superior to European foods C. the European food had helped enrich the flavors and varieties of the American foods D. people from other countries could still identify from the American food that was unique to their countries [判断题]电位滴定终点确定方法中，OE/OV-V曲线法又称阶微商法。
A.正确 B.错误 [名词解释]心率
[判断题]高层民用建筑的业主和使用人只可委托物业服务企业提供消防安全服务
A.正确 B.错误 [单选题]A-1101A振动11VI5101 HH值（ ）mm/s。
A.A.18 B.B.16 C.C.14 D.D.12 [单选题]以下哪项属于水排出人体的主要途径（ ）
A.眼泪、呼吸道 B.呼吸道、汗液 C.粪便、眼泪 D.唾液、汗液 E.尿液、唾液 [单项选择]子宫肌瘤最常见的变性是（）
A. 红色变 B. 囊性变 C. 玻璃样变 D. 肉瘤变 E. 钙化 [单项选择]早孕时常用来评估孕龄的方法是（）
A. 测量宫底高度、子宫大小 B. 测量胎儿双顶径、头围 C. 测量孕囊、胎儿头臀径 D. 测量胎儿腹围、股骨长度 E. 测量卵黄囊、胎儿头臀径 [单选题]所谓（ ）是指将一个以上的作业放入主存，并且同时处于运行状态，这些作业共享处理机的时间和外围设备等其他资源。
A.多重处理 B.多道程序设计 C.实时处理 D.共行执行 [单选题]砂岩中碳酸钙作为胶结物，其含量为10～15％，称之为()。
A.强灰质胶结 B.中灰质胶结 C.弱灰质胶结 D.无灰质胶结 E.略 F.略 [判断题]防蜂服是消防员在执行摧毁蜂巢任务时为保护自身安全时穿着的防护服装，也可以作为化学防护训练服，以代替化学防护服进行日常的防化训练。( )
A.正确 B.错误 [多选题]探测区域应按独立房(套)间划分下列说法正确的有（ ）。
A.一个探测区域的面积不宜超过500㎡ B.从主要人口能看清其内部，且面积不超过1000m2的房间，也可划分为一个探测区域 C.红外光束型感烟火灾探测器的探测区域长度不宜超过l00m D.缆式感温火灾探测器的探测区域长度不宜超过200m [单选题]星-三角降压启动，是起动时把定子三相绕组作（）联结。
A.三角形 B.星形 C.延边三角形 [判断题]清扫运行中的二次设备和二次回路时，应使用防静电工具，并采取措施防止振动、误碰。
A.正确 B.错误 [单项选择]道家有“师法自然”的思想，这一思想强调：人类行为应该以自然为师，顺应自然，与自然和谐发展。这种价值取向具有许多积极因素，最根本的是因为它（）
A. 以服从自然作为人类的根本准则 B. 坚持了科学的发展观 C. 符合事物发展的规律 D. 对社会存在具有促进作用 [单选题]《铁路通信维护规则》规定列车广播设备使用年限为（ ）年。
A.5 B.6 C.7 D.8 [单选题]生物多样性是生态系统稳定性的基本保障，这是充满生命的地球的基本特征，也是人类赖以生存的无价之宝。但是，人类活动正在以惊人的速度减少生物多样性。20世纪以来，平均每天有一个物种灭绝，而进入90年代，科学家们估计每天灭绝140个物种，因而全世界有10%的高等植物和3/4的鸟类的生存受到威胁，全球270种龟类爬行动物中的42%、150种灵长目中的2/3濒临灭绝。
这段文字意在强调：
A.A如何保护地球生物多样性 B.B生物多样性是人类赖以生存的基础 C.C多样的地球生物的种类正呈锐减趋势 D.D人类活动对地球生态系统产生严重影响 [单选题] 输电线路评价为异常状态表示线路已经有部分(____)状态量接近或略微超过标准限值,应监视运行,并适时安排检修。
A. 一般 B. 主要 C. 重要 D. 危急 [多项选择]以下属于美国人谈判风格的是( )。
A. 外露直率，能直接地向对方表露出真挚、热忱的情绪 B. 办事比较干净利落，总是兴致勃勃地开始谈判，乐意以积极的态度来谋求自己的利益 C. 赞赏那些精于讨价还价，为取得经济利益而施展手法的人 D. 对“一揽子”交易感兴趣 [判断题] 读数误差、照准误差、对中误差属于系统误差。该表述 ( )
A.正确 B.错误 [单选题]CRH2A(380A)统型动车组防雪风挡需要拆卸多少个
A.7 B.14 C.8 D.9 [单项选择]各种免疫球蛋白单体分子共有的特性是（）
A. 与抗原结合后可激活补体 B. 具有两个完全相同的抗原结合部位 C. 与靶细胞结合后能介导ADCC作用 D. 与颗粒性抗原结合后能介导调理吞噬作用 E. 轻链与重链以非共价键结合 [简答题]一台变压器，型号SFPSZ-150000/220，联结组别YNyn0d11，额定电压230（±）8×1.25％/121（±）2×2.5%/38.5，高压侧是带正反调的组合式有载分接开关，测量直流电阻结果如下：
高压绕组
档位 J0(m) B0(m) C0(m)
1 305.7 306.1 306.9
2 298.8 299.3 308.5
3 292.8 293.0 293.6
4 286.4 286.9 295.4
5 280.5 280.7 281.1
6 273.7 274.1 282.6
7 267.2 267.8 268.2
8 261.1 261.6 269.9
9 255.0 255.5 255.4
10 261.1 261.6 269.9
11 267.2 267.8 268.2
12 273.7 274.1 282.6
13 280.3 280.7 281.1
14 286.4 286.9 295.4
15 292.8 293.0 293.6
16 298.8 299.3 308.5
17 305.7 306.1 306.9
根据分析判断故障部位。
[单选题]125、昆虫自卵或幼体离开（）到性成熟能产生后代为止的个体发育周期，称为一个
世代。 A.寄住 B.越冬场所 C.母体 D.越夏场所 [单选题]当电气设备发生接地故障,接地电流通过接地体向大地流散,若人在接地短路点周围行走,其两脚间的电位差引起的触电叫()触电。( )
A. 单相 B. 跨步电压 C. 感应电 我来回答: 提交
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