未知题型

A.Itsimplifiesremoteinterfacestodistributedobjects.
B.Itpromotescleanerapplicationpartitioningandencouragesreuse.
C.Itprovidesaninitialpointofcontactforhandlingallrelatedrequests.
D.Itreducesmaintainabilityduetotheincreasedcomplexityofthedesign.
E.Itprovideslooselycoupledhandlersthatcanbecombinedinvariouspermutations.
【参考答案】

B, C

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