| Hydroponics, the science of growing
plants, in water or inert substances, represents one of the most innovative
practices in modern agricultural development. Not only does it allow greater of
the plant growth process, it permits the production of crops in hostile
infertile environments. The first widely publicized soilless gardening experiments were conducted during the 1930s. W. F. Gericke varied nutrient levels among specimens suspended in a gravel substrate (沙砾基质) to demonstrate remarkable alterations in growth. Among the findings that amazed his fellow horticulturists was the production of tomato plants over 6 meters high. The original hydroponics gardens merely consisted of plants floating in water. It was later discovered that the roots [单项选择]人认识某种事物或从事某种活动的心理倾向称为( )。
A. 态度 B. 爱好 C. 需要 D. 兴趣 [单选题]道岔由转辙部分、（ ）和辙叉部分组成。
A.A.电气部分 B.B.机械部分 C.C.连接部分 D.D.控制部分 [单项选择]Strange things happen to time when you travel, because the earth is divided into twenty-four time zones, and one hour separate. You can have days with more or fewer than twenty-four hours, and weeks with more or fewer than seven days.
If you make a five-day trip across the Atlantic Ocean, your ship enters a different time zone every day. As you enter each zone, the time changes one hour. Traveling west, you set your clock back; traveling east, you set it ahead. Each day of your trip has either twenty-five or twenty-three hours. If you travel by ship across the Pacific, yon cross the international date line. By agreement, this is the point where a new day begins. When you cross the line, you change your calendar one full day, backward or forward. Traveling east, today becomes yesterday; traveling west, it is tomorrow. According to the passage, it is believed that the Atlantic Ocean can be divided into ______ time zones. A. 2 B. 3 C. 4 D. 5 [简答题]当毒性或易燃气体混入空气供应系统进气口时，应对压缩机的进口空气进行监测。
[填空题]高压电动机最严重的故障是（）。
[单选题]集中冷站和区间中间风井纳入（ ），按照车站设备设施维保界面管理细则执行？
A.就近场段 B.就近车站 C.就近附属 D.独立附属 [简答题]通信中间件提供了一个通用的标准的系统集成框架，保证工作站与服务器的C/S间透明的数据访问，保证服务器各公用模块和应用模块间的高效通讯，提供了一个分布式的实时数据库环境，物理上实时数据库实体分布在不同的服务器上，逻辑上构成一个庞大而完整的实时数据库系统。
[判断题]未经国家发改委批准，地方政府及其相关部门可以自行改变峰谷电价、丰枯电价的政策，改变基本电费标准、计费方式。
A.正确 B.错误 [单选题]-B-001 3 2 3
对于一个电源来讲,在没有接通电路时,电源两端的电位差即为电源的( )。 A.电压 B.两个 C.负电势 D.反电势 [T/] [填空题]测量工作必须遵循（）的基本原则，为了减少测量误差的累积和提高测量精度，按照（）的工作程序进行测量。
[单选题]女性,45岁,高血压病史15年,并有高血压家族史。近半年来经常出现气喘、心悸,劳动后加重。查体:肥胖体型,血压170/100mmHg,X线检查,心脏肥大。最符合患者的心脏疾病是
A.左心室肌肥大 B.心肌萎缩 C.心肌梗死 D.心内膜、心肌纤维化 E.心肌炎细胞浸润 [单选题]《电力法》属于 ( )。
A.行政法规 B.地方性安全生产法规 C.行业规章 D.专业法律 [判断题]二级动火时，工区分管生产的领导或技术负责人（总工程师）可不到现场。
A.正确 B.错误 [单选题]管道水工保护工程中,常用建筑材料是( )。
A.砂、石、水泥等 B.石灰、砂、石等 C.黏土、砂、石块等 D.黏土、石灰、砂等 [判断题]电力工作人员可以不用按规定进行技术安全考试。定期考试每年两次。对考试合格者发给“电力安全合格证”。
A.正确 B.错误 [单选题]供电合同的()或者解除，应当依照有关法律行政法规和《电力供应与使用条例》的规定办理。
A.终止 B.改变 C.变更 D.中断 [单项选择]口腔保健咨询时，对于窝沟封闭剂是什么的提问，杨大夫是这样回答家长的
A. 封闭牙齿窝沟的药物 B. 高分子树脂材料 C. 一种光固化材料 D. 由树脂和稀释剂等组成 E. 预防龋齿的药物 [单选题]见票后定期付款的汇票，持票人应当自出票日起( )内向付款人提示承兑。
A.1个月 B.2个月 C.3个月 D.4个月 [单项选择]Which of the following is TRUE about the hours of the library
A. It will only be open on the weekends. B. It will be open both weekends and weekdays. C. It will shorten its hours on weekdays. D. It is not mentioned. [判断题]办理网上银行业务应遵循"事权划分、岗位分离"的原则。各级别角色操作人员岗位设置要确保操作权限和授权权限相互分离，严格遵守岗位职责，并按照省联社规定执行关键岗位人员岗位轮换和强制休假制度。（ ）
A.正确 B.错误 [判断题]真空灭弧室中的动、静触头断开过程中,产生电弧的主要因素是依靠触头产生的金属蒸气使触头间产生电弧。
A.正确 B.错误 [判断题] 故障可以由任何人检测到服务中断或潜在中断报告，包括技术员工。 (1.0分)
A.正确 B.错误 我来回答: 提交
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