The recent conference on the effective use of the seas and oceans was another attempt resolving major differences among countries with conflicting interests.

A．resolve

B．resolves

C．to resolve

D．being resolved

建筑安装工程费用中的材料费包括( )。

A．材料运杂费

B．材料采购及保管费

C．新结构、新材料的试验费

D．对建筑安装物进行一般鉴定检查所发生的费用

E．对构件的破坏性试验的费用