根据产品的结构、性能和使用特点，电线电缆可分为（）、（）、（）、电气装备用电线电缆和（）五大类。
参考答案：
裸电线、电磁线、电力电缆，通信电缆和通信光缆
开孔补强一般采用（）和（）两种方法。
(72) is the process of obtaining the stakeholdrs'formal acceptance of the completed project scope. Verifying the scope includes reviewing deliverables and work results to ensure that all were completed satisfactorily.
A．WBS Creation
B．Scope definition
C．Project acceptance
D．Scope verification
