A.1 B.2 C.3 D.4 E.5
A.耳?;蚨ㄖ茩C沒戴好 B.耳模或定制機外殼不合適 C.外耳道感染、耵聹太多 D.耳模的導聲管老化破裂 E.壓縮線路
A.HdLocator B.SpeechTracer C.HdLocatoromni D.HdLocatorwithSpeechTracer E.HdLocatorwithoutSpeechTracer