某厂生产的一批产品经质量检验，一等品与二等品的比是5:3，二等品与三等品的比是4:1

半直接浮选的煤泥水原则流程主要有哪几种形式？

Extreme Programming (XP) is a discipline of software development with(1)of simplicity,communication, feedback and courage.Successful software development is a team effort-not just the development team, but the larger team consisting of customer, management and developers. XP is a simple process that brings these people together and helps them to succeed together. XP is aimed primarily at object-oriented projects using teams of a dozen or fewer programmers in one location. The principles of XP apply to any(2)project that needs to deliver quality software rapidly and flexibly. 　　

An XP project needs a(an)(3)customer to provide guidance.Customers, programmers, managers, are all working(4)to build the system that's needeD. Customers-those who have software that needs to be developed-will leam simple, effective ways to(5)what they need, to be sure that they are getting what they need, and to steer the project to success.

空白（1）处应选择（）

A.importance

B.keys

C.roles

D.values

患者女，31岁，因反复气促、心悸5年，加重1d入院。查体：Bp100/70mmHg，端坐位，呼吸急促，双颧及口唇发绀，双下肺闻及大量湿啰音，心率132次/min，心律绝对不齐，第一心音强弱不等，P₂＞A2，心尖区可闻及低调隆隆样舒张期杂音和开瓣音，余瓣膜听诊区未闻及病理性杂音。腹软，肝肋下未及，腹部移动性浊音阴性，双下肢无水肿。

关于进一步治疗措施正确的描述有（提示治疗1周患者在药物控制下病情基本稳定，安静状态下无呼吸困难发作，心室率控制：静息时60～80次/min，床上轻度活动时90～100次/min。实验室检查血沉不快，C-反应蛋白及抗链球菌溶血素阴性。超声心动图显示瓣叶无钙化，左心房内径64mm，无左心房血栓。）（）

A.心脏电复律转复心房颤动

B.药物控制心室率加抗凝治疗心房颤动

C.宜选择经皮瓣膜成形术

D.宜选择外科瓣膜成形术

E.宜选择外科瓣膜置换术

F.不需要抗风湿治疗

《供电监管办法》规定，（）应当对用户受电工程建设提供必要的业务咨询和技术标准咨询；对用户受电工程进行（）和（），应当执行国家有关标准；发现用户受电设施存在故障隐患时，应当（）用户并指导其予以消除；发现用户受电设施存在严重威胁电力系统安全运行和人身安全的隐患时，应当指导其（），在隐患消除前不得（）。