A .有潜在的碰撞威胁
B .有真正的碰撞威胁
[单选题]↑↓箭头表示入侵飞机与本航空器的运动趋势,仅当入侵飞机的垂直速度>+()()英尺/分钟时,箭头趋势才会出现?A .500英尺/分钟B .1000英尺/分钟C .1500英尺/分钟
[填空题] 当航空器()或()时,车辆不得在航空器后方穿过。
[单选题]当发生航空器着火时()A . 立即通知主管领导B . 立即用沙子、泥土或其他矿物吸收剂进行掩盖C . 立即远离航空器D . 应使用机上或机坪配备的灭火设施立即动手灭火,并通知消防部门
[单选题]雷达管制尾流标准适用于跟进航空器与先行航空器同高度时,或当跟进航空器在先行航空器下方垂直间隔小于()米高度飞行时采用。A . 1000B . 500C . 600D . 300
[单选题]B.ecause of the heavy traffic,it was already time for lunch break_________ she got to her office.A.sinceB.thatC.whenD.until
[名词解释] 交通量(traffic)
[单选题]当电台在航空器航迹右侧或左侧()时,为航空器正切电台。A . 30°B . 45°C . 60°D . 90°
[单选题]The traffic is heavy this day, I arrive a bit late, so could you save me a place?A. can B. must C. need. D. might
[单选题]They use computers to keep the traffic smoothly.A. being run B. run C. to run D. running
[试题]The traffic is heavy these day,I arrive a bit late, so could you save me a place? A can B must C need D might