词汇与结构 Overloading an aircraft may shorten the cruising range and decrease the ______ of the aircraft.
词汇与结构 Overloading an aircraft may shorten the cruising range and decrease the ______ of the aircraft.
The time of useful consciousness while cruising at an altitude of 30,000 feet and sitting quietly would be about（ ）
The time of useful consciousness while cruising at an altitude of 30,000 feet and sitting quietly would be about（ ）
1