(???????????)? ???? ?? ???? ?????????????? ???? ????? (???????????)????

(????)??4×100?????????????

????????????? (??????)????

(????)???100????

?? ????? ?? 1/5

????7?????27????,?A?,??5?????????7???????????????????

????????:???

?????????????? ?? ??“??????????”????

?? (????)??????????????