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【多选题】
特殊他源微生物的作用机理（）。A.
某些特殊微生物对石油中长链正构烷烃（石蜡）和网状胶质、沥青质有乳化分解作用，使石油中的石蜡、胶质、沥青质部分转变为轻质油，增加石油的流动性，使石油变得易于开采
B.
某些微生物在其生长过程中分泌和排出体外的代谢产物具有表面活性剂的性能，通过其代谢产物和高聚物、糖酯等物质，降低油层表面张力，使岩石中的束缚油粘度降低，流动性增加，便于石油从所吸附的岩石中析出，从而提高原油采收率
C.
某些用分子生物学技术来构建的微生物，能在地层中产生大量二氧化碳和甲烷等气体，增加地层压力，提高采收率
D.
某些微生物还具有消除底层堵塞的作用
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【单选题】The commodities you offered are line with the business scope of our customers .
A.
out
B.
without
C.
out of
D.
outside
【单选题】the commodities you offered are____line with the business scope of our clients.
A.
outside
B.
out of
C.
out
D.
without
【单选题】The commodities you offered are——line with the business scope of our clients.
A.
outside
B.
out
C.
out of
D.
without
【单选题】The price of duty free commodities offered by international flight is higher than that in retail shops.
A.
True.
B.
False.
【单选题】The commodities you offered are ( )line with the business scope of our clients.
A.
out of
B.
outside
C.
out
D.
without
【判断题】_____ The price of duty free commodities offered by international flight is higher than that in retail shops.
A.
正确
B.
错误
【简答题】把...排列在外 排斥
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