A.競(jìng)爭(zhēng)對(duì)手的銷(xiāo)售規(guī)模B.競(jìng)爭(zhēng)對(duì)手的產(chǎn)品構(gòu)成C.競(jìng)爭(zhēng)對(duì)手的生產(chǎn)范圍D.競(jìng)爭(zhēng)對(duì)手的客戶(hù)基數(shù)