32. An online survey at sina.com suggested more than four in five said the present rules would not be effective _______ the rising housing prices.

A．to control

B．to have controlled

C．in having controlled

D．in controlling

叙述说明FRANCOTOSI燃煤锅炉屏式过热器与末级过热器的管子外径、节距、受热面积及材质。