危险品运输中，第一类是什么属性的物体？

当飞机的ACN值和跑道的PCN值之间是什么关系时，才能使用跑道？

A. ACN等于或大于PCN

B. CAN大于PCN

C. ACN等于或小于PCN

急救飞行在无法取得目的地天气实况时,如何掌握放飞条件

A. 根据天气预报放行航空器；

B. 根据起飞站天气实况放行航空器；

C. 根据任务需要放行航空器

双发失效后，在空中启动发动机，ITT温度必须要满足什么条件？After dual engine failure, in-flight restart must meet the condition that the ITT is ().

A. 小于90 less than 90

B. 小于120度 less than 120

C. 小于 100度 less than 100

飞机在通过逆温层或风切变区爬升或下降时，飞行员应对飞机性能的何种变化有所警惕

A. 发动机功率有所改变；

B. 温度表读数的逐渐下降

C. 空速表指示的突然变化

判断正误True or False：刹车温度读数显示白色时, 刹车温度在221-492℃之间。 The brake temperature is between 221 ℃ to 492 ℃ when the readout shows white.

飞机在层积云中飞行，会出现下列何种现象

A. 云中飞行一般平稳，有时有轻颠，轻度到中度积冰；

B. 光线忽明忽暗，能见度较差，云中飞行平稳，无积冰

C. 轻度到中度积冰，中度到强烈颠簸，能见度恶劣

每个航班都需要执行燃油供油单向活门测试。All flights need to execute Fuel feed check valve test

形成雷暴所需要的大气条件是( )。

A. 充足的水汽

B. 不稳定的大气

C. 初始的抬升力。

D. 以上都是

判断正误True or false ：
综合备用仪表只显示航道和下滑道数据。The integrated standby instrument (ISI) only displays localizer and glideslope data.

(案例分析)某机组执行克拉玛依至阿克苏航班，由于乌鲁木齐区调指挥下降高度时机偏晚，当联系上阿克苏塔台时，此时进近的飞机都在减速调整落地间隔（阿克苏机场沥青道面且没有快速脱离道，落地后需滑行至跑道端掉头后脱离跑道），塔台指挥比较繁忙，机组连续呼叫申请下降高度而无应答，此时机组听到部分指令：“下场压高度1200米，起始点报。”当时飞机正飞向起始进近定位点，限制高度也是1200米。机组立刻调整高度开始下降，并同时向塔台证实指令。请问，机组操作是否正确？如果是你，应该如何处置？ （cases analysis）Once some crew performed flight from Karamay to Aksu. Because the timing of commanding to descent in Urumqi area was relatively late, and when crew contacting with Aksu tower, other aircraft performing approach were decelerating and adjusting landing separation (Aksu airport equipped with asphalt pavement without rapid exit way, thus aircraft need to taxi to the end of RWY and get rid of RWY after landing), the tower guidance was relatively busy, and crew continuously called ATC and applied for descent with no response. Meanwhile, crew heard some instructions: descend QFE 1200M, report at the IF. At this time, aircraft was flying directly to IF with an altitude limit of 1200m. Crew adjusted altitude and initiated to descend and ask for confirmation of instructions from tower control as well. Was is correct regarding crew operation? If you were they, how would you handle with it?