数据流程图在描述系统逻辑功能方面的局限性表现在
A.不利于与用户的交流
B.图形符号过于复杂
C.不能反映系统的决策与控制过程
D.难于表现系统的总体结构
参考答案:C
Miss Li always tries her best to create an atmosphere in class ______ can help her students practice their speaking skills.
A.for which
B.which
C.where
D.of which
接入非中性点绝缘系统的三台电压互感器,宜采用Y0/Y0方式接线。