【名词&注释】
突发公共卫生事件(public health emergency)、社会公众(public)、舌下腺(sublingual gland)、颌下腺(submandibular gland)、传染病疫情(epidemic situation of infectious diseas ...)、食物中毒事件(food poisoning occurred)
[单选题]为纯黏液性腺体的是
A. 腮腺 B. 颌下腺 C. 舌下腺 D. 唇腺 E. 腭腺