精选优质文档-倾情为你奉上12人的因素(1)What percentage of aircraft accidents have been deemed to have been directly attributed to human factors-rated related causes? 正确答案:B (2)Night vision is enhanced by 正确答案:A (3)Who is exposed to a high glare environment while on the ground (beach sand or snow), which would help to enhance night vision? 正确答案:B (4)Which arctic flying hazard is caused when a cloud layer of uniform thickness overlies a sn