A.BSL-2 B.BSL-2,BSL-3,BSL-4 C.BSL-3,ABSL-3 D.BSL-4,ABSL-4 E.BSL-3,ABSL-3和BSL-4,ABSL-4
A.相輔相成B.激烈競爭C.各自為謀D.相互羈絆
A.再生式轉(zhuǎn)型B.轉(zhuǎn)讓式轉(zhuǎn)型C.政府干預(yù)