A.鮑魚B.海參C.牡蠣D.對(duì)蝦
A.顯微鏡B.溫度計(jì)C.水質(zhì)檢測(cè)儀D.漁網(wǎng)
A.水流速度過快B.水質(zhì)渾濁C.光照過強(qiáng)D.底質(zhì)過硬