妊娠合并心脏病的治疗，应是A．产后乏力性出血，应立即肌注麦角新碱B．妊娠2月发生心衰

软件设计模块化的目的是 【4】 。

Object-oriented analysis(OOA)is a semiformal specification technique for the object-oriented paradigm. Object-oriented analysis consists of three steps. The first step is (71) . It determines how the various results are computed by the product and presents this information in the form of a (72) and associated scenarios. The second is (73) ，which determines the classes and their attributes. Then determine the interrelationships and interaction among the classes. The last step is (74) , which determines the actions performed by or to each class or subclass and presents this information in the form of (75) .

74（）

A．use-case modeling

B．class modeling

C．dynamic modeling

D．behavioral modeling

电缆布线时若折弯半径在线径d大于20mm时，折弯半径应大于电线外径的（）倍以上。

若发现煤岩松软、片帮、来压或钻孔中水压涌水量突然增大、顶钻等异常现象时，必须立即停止钻进，拔出钻杆。

曹仲达