A:whether you have looked at a ma
B:whether you had looked at a ma
C:whether have you looked at a ma
D:whether had you looked at a ma
①离体的植物器官、组织或细胞②根、芽③愈伤组织④脱分化
⑤再分化⑥植物体
下列不属于对台湾“进口—加工—出口”经济发展有利因素的是( )