孔隙小、通透性差,不利于根系的穿插与生长的孔隙为()。*
A.毛管孔隙
B.非毛管孔隙
C.无效孔隙
参考答案:C
The building was named Ford Hall________a man named James Ford.[ ]
A.in place of
B.in celebration of
C.in memory of
D.in favour of
产业政策的对象是( )。
A.产业优化
B.产业升级
C.产业投资
D.产业结构
E.产业组织