A.header=TB.row.names=1C.rownames=1
A.補(bǔ)全代碼即可B.Esc鍵退出C.沒(méi)關(guān)系,命令參數(shù)太多時(shí)換行很方便
A.cars[1,2]B.cars[2,]C.cars[,2]