209、21.下列软件那些是操作系统。

96、下列关于状态图的说法中,正确的是()

95、31.UML的类图不包含哪个抽象的层次()

94、UML中,不属于类的主要版型有()

93、将数据流图映射为程序结构时,所用映射方法涉及信息流的类型。其信息流不包括()。

92、下面关于面向对象方法中消息的叙述,不正确的是()。

91、Which degree of cohesion is a module if it performs a number of actions, each with its own entry point, with independent code for each action, all performed on the same data structure? ()

90、Which one is not right for functional cohesion?()

89、Which degree of cohesion is a module if it performs exactly one action? ()

88、Which degree of cohesion is the following module?()

87、Which degree of cohesion is a module if it performs a series of actions related by the procedure to be followed by the product, but in addition all the actions operate on the same data?()