题目内容

Anabsenceofvisiblegroundfeature,suchaswhenlandingoverwater,darkenedareasorterrainmadefeaturelessbysnow,cancreatetheillusionthat（）

A. theaircraftisataloweraltitudethanisthecase,whichmayleaddescendstoolowonapproach
B. theaircraftisatahigheraltitudethanisthecase,whichmayleadapilotdescendstoolowonapproach
C. theaircraftisatahigheraltitudethanisthecase,whichmayleadapilotdescendstoohighonapproach

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