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    【题目】各种洗涤剂广泛进入人们的生活中，下列洗涤中所用洗涤剂具有乳化功能的是（ ）

    A．用汽油除去衣服上的油污

    B．用洗洁精清洗餐具上的油污

    C．用水洗去盘子中的水果渣

    D．用醋洗去水壶中的水垢

    【答案】B

    【解析】洗洁精对油污起乳化作用，能使大的油滴分散成细小的液滴不再聚集在一起，乳化后形成的细小液滴容易被水冲走．

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