阴离子型表面活性剂为（）
A.普朗尼克
B.季铵化物
C.卵磷脂
D.肥皂类
E.乙醇
参考答案：D
解析：非离子型表面活性剂包括：脂肪酸甘油酯、蔗糖脂肪酸酯、脂肪酸山梨坦（司盘）、聚山梨酯（吐温）、聚氧乙烯脂肪酸酯（卖泽）、聚氧乙烯脂肪醇醚（苄泽）、聚氧乙烯-聚氧丙烯共聚物（泊洛沙姆或普朗尼克）。阴离子型表面活性剂包括：肥皂类（碱金属皂、碱土金属皂、有机胺皂）、硫酸化物（硫酸化油、高级脂肪醇硫酸酯）、磺酸化物。阳离子型表面活性剂是季铵化物，主要有苯扎氯铵（洁尔灭）和苯扎溴铵（新洁尔灭）。
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| I've never been late for school, but yesterday I came very close. My alarm clock didn't __1__ and by he time I woke up, my father had already __2__ into the bathroom and had to wait for him __3__. I had to really rush, I took a quick shower, and had some breakfast, and then __4__ to the bus stop. Unfortunately, by the time I got there, the bus had __5__ left. I started walking, but I knew I can't get to school __6__ time. Luckily, my friend Tony and his dad came __7__ in his dad's car and they __8__ me a ride. When I got to school, the final bell __9__. I __10__ made it to my class. | ||||
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