- 問題詳情:Itisasadfactoflifethatonlyoneortwopercentofinventeditemsmakemoneyfortheirauthorofthisbookbelievesthiscouldbeincreasedtotenpercentifinventorswereprovidedwithandusedtheinformationavailablenow.Mostinventorsdonothavethequalitiesneededforcreatings...
- 20011