● you will hEAr A ConvErsAtion ABout quAlity Control.● For EACh quEstion 23--30, mArk onE lEttErA,
B、orC、For thE CorrECt AnswEr.●AFtEr you hAvE listEnED onCE, rEplAy thE rECorDing. how mAny ArE thErE quAlity Control inspECtion points
A、

A、thrEE

B、

B、Four

C、

C、FivE