An ILS consists of two independent sub-systems, one providing lateral guidance (_______), the other vertical guidance (_________) to aircraft approaching a runway. A: glide slope; localizer B: glide path; localizer C: localizer; glide path D: VOR; glide slope

[音频]Air Force 1：Norcal Approach, good afternoon, Air Force 1 is _________information ____, request the ______RNO GND：American 1218 runway 16R taxi via A, ______AAL1218: A To 16R without delay, American 1218Norcal Approach: ...the localizer descend at pilot’s _______, maintain_____Air Force 1:_____________________Air Force 1