以下哪个选项是新增建设用地的缴款义务人（） ["市、县人民政府","市、县国土资源管理部门","用地单位","省级国土资源管理部门"]
A block and tackle is rove to advantage. This means that the（）. ["blocks have been overhauled","hauling parts of two tackles are attached","hauling part leads through the movable block","hauling part leads through the standing block"]
三极管基极的作用是（）载流子。 ["发射","输送和控制","收集","产生"]
运营系统设计的内容包括（）。 ["产品和服务的设计","流程的设计","设施的选址","设施的布置"]
项目范围的定义要以其组成的（）定义为基础。 ["A.服务的范围","B.产品的范围","C.产品和服务的范围","D.产品或服务的范围"]
电网事故分为哪几类？
