System analysis is traditionally done top-down using structured analysis based on (90) ．Object-oriented analysis focuses on creation of models．The three types of the analysis model are (91) ．There are two substages of object-oriented analysis． (92) focuses on real-world things whose semantics the application captures．The object constructed in the requirement analysis shows the (93) of the real-world system and organizes it into workable pieces． (94) addresses the computer aspects ofthe application that are visible to users．The objects are those which can be expected to vary from time to time quite rapidly．

A．Static analysis
B．Semantic analysis
C．Scope analysis
D．Domain analysis

中兴M900，80波系统配置了OCI板，现业务开通10波，OA板用到了OPA1712，OBA2220，HOBA2424，试计算每种单板饱和时单通道和主光（和波）的输入、输出功率是多少？