计算过程能力Cpk数值，需要收集数据：USL规格上限、LSL规格下限、（）、σ为过程

Last week, Collins went to a supermarket to buy a snack. In the supermarket, he picked up a packet of potato chips from the shelf. The price tag on the packet indicated that the price for the potato chips was HK$20.When Collins gave HK$20 to the cashier of the supermarket, the cashier told him that the price for the potato chips should be HK$40.Required:In relation to contract law, advise Collins as to whether he could insist on paying HK$20 for the potato chips. (10 marks)

口腔正常菌群对宿主有益之处不包括

A．作为生物屏障，抑制外源微生物
B．致敏宿主，提高免疫力
C．刺激宿主免疫反应，提高免疫力
D．维持口腔或全身(如消化道)微生物的生态平衡
E．营养功能

集体 * *

患儿，男，5岁，因再生障碍性贫血入院，护士在查房时发现患儿高热，体温39.5℃，采取的降温措施错误的是

A．头戴冰帽
B．腋下及腹股沟放冰袋
C．乙醇擦浴
D．口服布洛芬混悬液
E．肛门填塞消炎痛栓

功能分化（斯宾塞）