男性，72岁。咳喘，咯痰清稀，面浮肢肿，脘痞，纳差，尿少，怕冷，口唇青紫，舌暗，苔白滑，脉沉细。此病可诊断（）

A.肾虚之喘证

B.脾肾阳虚之喘证

C.阳虚水泛之肺胀

D.肺肾两虚之肺胀

E.肾气衰微之水肿

Artificial intelligence (AI) ,an interdisciplinary field, is usually regarded as a branch of computer science, dealing with models and systems for the performance of functions generally associated with human intelligence, such as (71) and learning.

In AI, knowledge-based system is an information (72) system that provides for solving problems in a particular domain or application area by drawing inferences from a knowledge base. Moreover, some knowledge-based systems have learning capabilities.

Expert system (ES) indicates the knowledge-based system that provides for solving problems in a particular domain or application area by drawing inferences from a knowledge base developed from human (73) . Some expert systems are able to (74) their knowledge base and develop new inference rules based on their experience with previous problems. The term "expert system" is sometimes used (75) with "knowledge-based system", but should be taken to emphasize expert knowledge.

（72）处填（）。

A．supervisory

B．manipulating

C．management

D．processing