A.12%~15%30%~40%40%~50% B.10%~15%25%~30%50%~60% C.10%~15%25%~35%45%~55% D.10%~15%30%~40%40%~50% E.15%~25%25%~35%45%~55%
A.2~3個(gè)月時(shí) B.3~4個(gè)月時(shí) C.6~7個(gè)月時(shí) D.7~8個(gè)月時(shí) E.4~6個(gè)月時(shí)
A.1小時(shí) B.2小時(shí) C.3小時(shí) D.半小時(shí) E.15分鐘