An application architecture specifies the technologies to be used to implement one or more information systems. It serves as an outline for detailed design, construction, and implementation. Given the models and details, include （1）, we can distribute data and processes to create a general design of application architecture. The design will normally be constrained by architecture standards, project objectives, and （2）. The first physical DFD to be drawn is the （3）. The next step is to distribute data stores to different processors. Data（4） are two types of distributed data which most RDBMSs support. There are many distribution options used in data distribution. In the case of （5）we should record each table as a data store on the physical DFD and connect each to the appropriate server.

（1）是（）

A. logical DFDs and ERD

B. ideal object model and analysis class model

C. use case models and interface prototypes

D. physical DFDs and database schema

二段式加热炉下加热的燃料分配大于上加热，其主要目的是（）。

A、炉气上浮，提高热效率

B、节约燃料

C、提高加热速度

D、减少黑印