A. where is the chief officer B. where the chief officer is C. is where the chief officer D. the chief officer is where
A. 颊黏膜 B. 唇黏膜 C. 口底黏膜 D. 舌腹部黏膜 E. 舌背黏膜
A. IgA B. IgE C. IgM D. IgD E. IgG
A. 潮气量 B. 残气量 C. 深吸气量 D. 补吸气量或吸气贮备 E. 补呼气量或呼气贮备量