市政平面控制测量方法常用() ["导线测量","水准测量","GPS测量","距离交会","三角高程测量"]
血清总胆固醇含量升高见于() ["肺结核","严重肝病","重度贫血","甲状腺功能亢进","肾病综合征"]
半夏药材原植物来源于() ["A.兰科","B.姜科","C.五加科","D.毛茛科","E.天南星科"]
农民肺属于职业性变态反应性肺泡炎,引起农民肺的粉尘是()。 ["棉、麻等植物性粉尘","霉变枯草粉尘","田间飞扬的粉尘","粮谷粉尘","飞扬的人畜粪肥粉尘"]
《供电服务规范》中电力需求侧管理的概念?
架空线路的导线,应采用符合国家电线产品技术标准的铝绞线,禁止使用()和()。