答案:A
答案:A
A. 左前侧;left forward
B. 左后侧;left backward
C. 右前侧;right forward
D. 右后侧;right backward
A. 水汽含量增加
B. 相对湿度增大
C. 相对湿度减小
A. 让旅客随身携带;
B. 作为行李托运;
C. 放在适当的货舱内
A. 场高600ft
B. 场高800ft
C. 无线电高度600ft
D. 无线电高度800ft
A. 燃油交输保持机翼油箱之间的平衡,燃油转输将燃油从中央油箱转移至机翼油箱Fuel crossflow maintains balance between the wing tanks and fuel transfer moves fuel from the center tank into the wing tanks
B. 燃油转输是一个人工过程而燃油交输是一个自动过程fuel transfer is a manual process and fuel crossflow is an automatic process
C. 燃油交输将燃油转移至中央油箱而燃油转输将燃油转移至机翼油箱 fuel crossflow moves fuel into the center tank and fuel transfer moves fuel into the wing tanks
D. 燃油转输仅在地面进行而燃油交输在地面和空中进行 fuel transfer operates on the ground only while fuel crossflow operates on ground and in flight.
A. 等于真空速;
B. 大于真空速;
C. 小于真空速
A. 1000
B. 1500
C. 2000