[问答题,简答题] 何谓优质蛋白质?

某女，30岁，胸片示右上纵隔一椭圆形阴影，其中有斑点状钙化影，透视下见块影可随吞咽上下移动，首先考虑() ["A．胸腺癌","B．支气管囊肿","C．畸胎瘤","D．心包囊肿","E．胸内甲状腺"] 试述我国居民膳食指南。 口服应用吗啡的副作用有() ["A．恶心、呕吐","B．嗜睡","C．头晕","D．便秘","E．血压升高"] 癌痛患者除疼痛外还存在() ["A．失眠","B．焦虑","C．恐惧","D．愤怒","E．绝望"] 何谓食品等值交换份? 何谓优质蛋白质?