题目萃取精馏塔的板效率低,约为普通精馏塔的( )左右。A. 1/2B. 1/3C. 2/3D. 3/4萃取精馏塔的板效率低,约为普通精馏塔的( )左右。A. 1/2B. 1/3C. 2/3D. 3/4题目解答答案A. 1/2