???, 1.95p ?? 2440.14…?·?? ?? 8.7? ?? 1261.5? ??

7? ???? ? ???(2438.19)?? 1.95???(0.08%) ??? 2440.14? ?? ???.

?????? ? ???(761.33)?? 1.14???(0.15%) ?? 762.47? ??? ????.

?? ?????? ?·?? ??? ? ???(1252.8?)?? 8.7? ??? 1261.5?? ????.

[??=???]