患者，女性，28岁，平素健康，妊娠38+周时，轻微腹痛出现破水，临产，分娩过程中，突然出现心悸、气促、头晕、皮肤紫绀， * * 大量出血约1000ml，不凝固，PLT：50乘以十的九次方/L，血浆FDP：23mg／L。

该患者发生上述情况的主要促发因素是（）

A.纤溶系统活性降低

B.缺氧

C.脱水

D.单核巨噬细胞系统受抑制

E.高凝、纤溶状态

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.

（75）处填（）。

A．synonymously

B．equivalently

C．substitutionally

D．homomorphously