试述皮肤病使用外用药的注意事项。
枕环枢联合由() ["A．二个环枕和三个环枢关节联合构成","B．二个环枕和二个环枢关节联合构成","C．三个环枕和三个环枢关节联合构成","D．三个环枕和二个环枢关节联合构成","E．一个环枕和三个环枢关节联合构成"]
引起开放性鼻音的疾病正确的是() ["A．肥厚性鼻炎","B．鼻咽部肿瘤","C．腭裂","D．腺样体肥大","E．后鼻孔息肉"]
谷类食物与下列哪种食物混合食用，可提高其蛋白质生物价值() ["A．鸡蛋","B．牛奶","C．鱼、虾","D．大豆","E．猪肉"]
致咽异物感的是() ["A．咽部及其周围组织的慢性炎症","B．腭垂过长","C．食管肿瘤","D．反流性食管炎","E．以上都是"]
试述骨盆骨折常见的合并损伤。
