经济合理剥采比
参考答案:
是指经济上允许的最大剥岩量与可采矿量之比,即利润增量为零时的瞬时剥采比,也称为盈亏平衡剥采比(breakevenstrippingratio)。
I didn’t see your sister at the meeting. If she ___________, she would have met my brother.
A.has come
B.did come
C.came
D.had come
“成交方式”栏:( )。
A.FOB
B.进料对口
C.L/C
D.CFR