We have more than 80 flats in this building, each solar heaters．
A. is equipped with
B. equipped with
C. is equipped by
D. equipped by
网友回答
A. is equipped with
(答案→)B. equipped with
C. is equipped by
D. equipped by
解析：本题考查独立主格结构。逻辑主语each与equip with之间是被动关系，故用过去分词，be equipped with装备，故选B。