A.失聲 B.音調(diào)降低 C.呼吸困難 D.聲音嘶啞 E.誤咽飲水嗆咳
A.+15% B.+25% C.+35‰ D.+55% E.+65%
A.15~20% B.21~24% C.25~50% D.51~60% E.61~90%