A.3 B.4 C.5 D.6
A.聲明、提取、打開、關(guān)閉 B.聲明、打開、提取、關(guān)閉 C.提取、聲明、打開、關(guān)閉 D.聲明、打開、關(guān)閉、提取
A.normal B.transactional C.immediate D.abort