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Adaptation of Living Things{{/B}} Certain animals and plants develop characteristics that help them cope with their environments better than others of their kind. This natural biological process is called adaptation. Among the superior characteristics developed through adaptation are those that may help in getting food or shelter, in providing protection, and in producing and protecting the young. That results in the evolution of more and more organisms that are better fitted to their environments. Each living thing is adapted to its way of life in a general way, but each is adapted especially to its own distinct class. A plant, for example, depends upon its roots to fix itself firmly and to absorb water and ino A. help others of their kind get food, shelter and other things needed. B. survive even in extremely severe conditions. C. become better adapted to the environments than others of their kind. D. result in the evolution and production of more intelligent organisms. [单选题]混凝土枕与混凝土宽枕的分界处距钢轨接头不得少于( )根轨枕。
A.5 B.6 C.7 D.8 [填空题] Questions 47 to 56 are based on the following passage.
Vegetarianism is the theory or practice of living solely upon vegetables, fruits, grains, and nuts—with or without the (47) of milk products and eggs — generally for ethical, environmental or (48) reasons. All forms of flesh (meat, fowl, and seafood) are (49) from all vegetarian diets, but many vegetarians use milk and milk products. In the early 21st century, vegetarianism has become decidedly mainstream. The number of vegetarians is difficult to determine, but a 2006 (50) of 1,000 U.S. adults by the Vegetarian Resource Group found that 6.7 percent of respondents never ate meat, and 1.4 percent of those were vegan. A British survey the same year found that 12 percent of respondents called themselves "vegetarian". Many of today vegetarians came to the practice because they (51) with sentiments about the immorality of eating animals who suffered to bec [单选题]试验应使用（ ）短路线，加电压前应检查试验接线，确认表计倍率、量程、调压器零位及仪表的初始状态均正确无误后，通知所有人员离开被试设备，并取得试验负责人许可，方可加压。
A.铜质 B. 铝质 C. 规范的 D. 多股铜线作为 [单选题]电能表常数的正确单位应是( )。
A. 度／小时 B.R／KW•H C. 度／KWH D. r／(kW·h) [多选题]公安机关对被依法吊销许可证的单位应当同时依法(??)。
A.追缴违法所得 B.责令限期取缔 C.责令限期停业整顿 D.收缴非法财物 [判断题]两份工作票中的一份必须经常保存在工作地点，由工作负责人收执，另一份由值班员收执，按值移交。（）
A.正确 B.错误 [单项选择]某药品连锁企业欲在原有管理的基础上建立一套适合本企业的具有基本功能的管理信息系统，以提高企业的管理水平和经济效益。经过本企业现状分析后决定采取委托开发的方式进行开发，现已成立了以公司总经理为组长的“企业管理信息系统开发小组”，并为此审批了专项资金。开发小组已经进行了以下几项工作：
现行系统的调查。包括：(1)企业现状调查：包括对企业机构、业务、人员、现有管理体系、环境的调查。(2)企业业务流程分析 拟建系统的分析。包括；(1)确定系统目标。(2)确定系统功能。(3)建立系统的逻辑模型。 开发过程。包括(1)开发方法为生命周期法。(2)控制开发过程。(3)建立评审、转换、运行、维护。 在系统分析阶段，开发小组，画出了系统的数据流程图，为了对数据流程图中的各项数据进行定义，还应编写相应的( )。 A. 数据说明书 B. 数据手册 C. 数据字典 D. 系统分析说明书 我来回答: 提交
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