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??? ??? ?? ??????????? ?? ????????? ????????? ??? ??????????, ?????? ???????????????? ????? ???? ????? ?? ?? ??? ????? ???? ??? ??? ??? ?? ?????????? ????? ????????? ?? ??????????? ??? ?? ???, ????? ????? ??? ????? ???????????? ?? ????????? ????? ??? ???????? ???? ??? ?? ?????????, ??????? ??? ?????????? ??????? ?? ?? ??????????? ??? ??????????????, ????? ???? ??????? ?? ????? ????? ??? ????????? ?? ?? ??????????.

1.????????? ????????????????

????????? ???????????????? ????? ????????? ??????? ??? ????? ?? ????, ??? ??? ??? ??? ??????????????? ??? ???????? ?? ???. ????????????, ??????? ?????? ??? ??? ????????????? ????? ????????? ?????? ??? ?????????.

????, ??? ?????????????, ???? ?????? ??? ????????????????, ????????? ?????????????, ???????????, ????? ??? ?? ????? ????????? ??????? ??? ?? ????? ??? ????, ????????? ????? ????? ????????, ??????????????, ????? ??????????? ??? ???????, ?? ???? ??????????? ??? ???, ??? ??? ????????, ??? ????? ????????, ??? ????????????? ?????? ??? ??????? ?????????, ????? ??????????? ?? ??????? ????????????? ??? ??????????? ?? ?????????? ??? ??????? ????????????. ?????????????, ?????-??????????? ??? ???????????????. ?? ????? ???? ??? 0.05% ~ 0.2%.

2.?????????? ????????????????

???? ??? ?? ??????????? ???????????????? ????? ?????? ????????????, ??? ?? ????????? ?? ????? ??? ?????????? ??????? ???? ?? ?????? ????, ?? ????? ?? ???????????????? ????????.

????????? ?????? ??? ?????? ????? ????? ?????????????????? (????), ??????? ????????????????? (???), ????-???????????????????? (????), ????????? ???????? (???), ???"? ?, ???? ?? ?????????? ??????????, ?? ?????????? ???? ???? ?????? ???????????.

3.?????????

???? ???? ???????? ????????????????, ???? ?????? ??????? ???????????? ????? ????? ??? ??? ???????? ????, ?? ???????????????? ???????? ???? ???? ?????, ??? ?????? ?????? ?? ??????? ???????????? ????? ??????? ?????? ?????? ????? ??? ?????? ??? ??????, ????? ??? ?? ?????? ????? ???? ????????????? ??? ??? ??? ?????? ?? ????????????? ??? ????. ????????? ?????? ??? ????????? ????? ???????????????? ??????? ?????, ?????? ?????, ???"? ?, ?? ???? ??? ???? 1/4 ?? 1/2 ??? ????????????????.

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