产业政策的( )是产业结构和产业组织。
A．目标 B．实质C．对象 D．核心
参考答案：C
—What is that building ? — the sports equipment is stored .
A．That’s the building which
B．That is in which
C．The building that
D．That’s where
高速切削螺纹时，应注意哪些问题
