A.1/3 B.1 C.3 D.6
A.規(guī)模報(bào)酬遞減 B.規(guī)模報(bào)酬不變 C.規(guī)模報(bào)酬遞增 D.勞動(dòng)懂得邊際產(chǎn)量遞減
A.價(jià)格競(jìng)爭(zhēng) B.產(chǎn)品差異化競(jìng)爭(zhēng) C.廣告和促銷競(jìng)爭(zhēng) D.以上都有