ReadandWritePeriodical610ReadandWritePeriodicalReadandWritePeriodicalReadandWritePeriodicalVol.6No.10ReadandWritePeriodicalReadandWritePeriodical200910October2009ReadandWritePeriodicalReadandWritePeriodical。???,,。,。11.130%,,;。。1.2、,。,、。,。1.3,,,,,,“”,。:90%,,,。1.4,,。。1.5,,,,;,,,,、、,。。1.6,“”,,,,,,,。,,,“”“”,,;,。、,,,,,。,。1.7,,。,。。,,、、,。1.8,,,,、,,。,,,,,。2,,:2.1,,“”。。,,,“”。、,。,。,。。、,,,、,。,。,,,,。,、,。、。,。,,,。,。,。2.2“”。,,、、,,“”“”。(1):、、,。(2):,。,;,,,;,(197)(400043)!,,。、、。,。:!G718!C!1672-15782009)10-0185-02185--ReadandWritePeriodical610ReadandWritePeriodicalReadandWritePeriodicalReadandWritePeriodicalVol.6No.10ReadandWritePeriodicalReadandWritePeriodical200910October2009ReadandWritePeriodicalReadandWritePeriodical,,、,。7,2.8%。,,。,,,。3.2.2.3,35,13.3%。,,,,,。32,12.1%。,,,,。3.2.2.44,1.6%。,。,,3.33.3.1(1),。,、,,、,,。(2),。3.3.23.3.2.1,,、;,。3.3.2.2,,,、、、,,。,。“”,,。3.3.2.3。。(1),。(2)。(3)。(4),,。(5)。3.4,,。,,,,、,。3.5,,,、、,,。44.1(1)。(2)。(3)。(4)。4.2(1),,。(2),,,。(3),,,,。(4),,。(5)。:[1],.[J].,2005.3.[2].[J].,2001.2.[3],.[J].,1999.4.[4].[J].,2003.4.(185),。(3):、,。(4):,,、,,。2.3,。(1):,、,,。(2):,。,。,。(3)::、,、。(4):。,,、,,。(5):,。,,,,、,,。(6):,,。,,。:[1],.[M].:,2003.:,:,:。197--