Refertotheexhibit.Whichoptioncorrectlydescribestheorderofsignalingandcall processingeventswhenabranchemployeecallsheadquarters?()A.P,S,T,UB.U,T,S,PC.S,U,P,TD.P,U,S,TE.S,P,U,TF.S,P,T,U
题目
Refertotheexhibit.Whichoptioncorrectlydescribestheorderofsignalingandcall processingeventswhenabranchemployeecallsheadquarters?()
![](https://status.shangxueba.com/ask/UploadFile/2019-03-27/C87094E343D504CBE54E855BACE6CC55.jpg)
A.P,S,T,U
B.U,T,S,P
C.S,U,P,T
D.P,U,S,T
E.S,P,U,T
F.S,P,T,U