[经] petroleum revenue tax benefits

shí yóu shōu yì shuì de jiǎn miǎn ㄕˊ ㄧㄡˊ ㄕㄡ ㄧˋ ㄕㄨㄟˋ ㄉㄜ˙ ㄐㄧㄢˇ ㄇㄧㄢˇ