听证,听取证词

hard-of-hearing hard of hearing mechanism of hearing hearing commission to examine witnesses monaural hearing binaural hearing hearing impairment hearing disorder hearing protector hearing disturbance order of calling witnesses confrontation of witnesses credibility of witnesses corroboration of witnesses sensation level(of hearing) handicaps of hearing range of normal hearing percent impairment of hearing Ohm's law of hearing date of hearing telephone theory of hearing test of hearing threshold