A—cost price F—sale price

B—factory price G—wholesale price

C—net price H—retail price

D—price free on board I—fixed price

E—purchase price J—guaranteed price

K—cash price O—price control

L—market price P—maximum price

M—preferential price Q—minimum price

N—piece price

（）市场价（）船上交货价

试简述爆破地震勘探野外作业、室内作业和地震资料解释三个阶段的主要内容。