The author seems to be mainly concerned with most fisheries' ______.
A.management efficiency
B.biomass level
C.catch-size limits
D.technological application
第1题
以脉位深沉为特征的脉是
A.沉脉、伏脉、涩脉
B.沉脉、牢脉、细脉
C.沉脉、弱脉、牢脉
D.沉脉、伏脉、紧脉
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