配制体积分数为5%的HC1600ml,下面配制正确的是()。 ["称取HC130g,加水稀释至600ml混匀","量取HC150ml,加水稀释至100ml混匀","称取HC130g,加水稀释至600g混匀","量取HC130ml,用水稀释至600ml混匀"]
根据加工方法,下列茶类中属于烘青绿茶的是() ["龙井茶","花茶","碧螺春茶","黄山毛峰茶"]
从技术上看,办公业务网是建立在()之上的。 ["局域网","城域网","广域网","因特网"]
氯霉素是广谱抗生素,主要用于() ["伤寒杆菌","痢疾杆菌","脑膜炎球菌","以上都是"]
行政决策者素质
重庆三宝是哪三宝?