- 搜標(biāo)題
- 搜題干
- 搜選項(xiàng)
單項(xiàng)選擇題
壟斷競(jìng)爭(zhēng)廠商長(zhǎng)期均衡的條件是（）
A．MR=MC
B．MR=LMC=SMC=LAC=SAC
C．MR=LMC=SMC，AR=LAC=SAC
D．MR=LMC=AMC
