建设项目投资的计价特点有( )。
A.单件计价
B.多次计价
C.组合计价
D.计价方法的多样性
E.计价依据单
参考答案:A,B,C,E
On a __( )__ memory system,the logical memory space available to the program is totally independent of the physical memory space.
A.cache
B.virtual
C.RAM
D.ROM
车库应有良好的通风设施。