A.推土—轉(zhuǎn)運—卸料—回駛 B.平整—轉(zhuǎn)運—卸料—回駛 C.挖掘—轉(zhuǎn)運—卸料—回駛作業(yè) D.鏟裝—轉(zhuǎn)運—卸料—回駛
A.25 B.40 C.60 D.75
A.2~4 B.4~6 C.6~8 D.8~10