???, 2.25p ?? 2604.72…?·?? ?? 0.5? ?? 1307.5? ??

4? ???? ? ???(2602.47)?? 2.25???(0.09%) ??? 2604.72? ????.

?????? ? ???(889.29)?? 1.65???(0.19%) ?? 890.94? ??? ????.

?? ?????? ?·?? ??? ? ???(1308.0?)?? 0.5? ?? 1307.5?? ????.

[??=???]