题型:问答题 简答题 —Could you lend Lucy some money? —_____! She is always borrowing money and never thinking of paying back.A.No problemB.Come onC.No wayD.Go ahead 查看答案
题型:问答题 简答题 经过一级预处理的污水与二次沉淀池底部回流的活性污泥同时进入曝气池混合后,在()的作用下,混合液得到足够的溶解氧并使活性污泥与污水充分接触。A.分解B.氧化C.曝气D.吸附 查看答案