中国石油大学 / 中石油
正确率:100%
8. 4. With the total recoverable oil or gas reserve of 7.1---71 million tons (50---500 million barrels) the well is a _________________.
A、Super oil field
B、Big oil field
C、Middle-sized oil field
D、Small-sized oil field
A、Super oil field
B、Big oil field
C、Middle-sized oil field
D、Small-sized oil field
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