与暖锋有关的影响飞行的天气是

判断正误True or False：主起落架舱由一个双环路探测系统保护。The main landing gear bay is protected by a double-loop detection system.

（案例分析） 某日一航班（CRJ900）从重庆飞呼和浩特，起飞后出现后货舱烟雾警告信息，机组执行检查单后，后货舱烟雾持续存在，而当前着陆重量为36吨，请问，机组是马上着陆还是等待耗油?如果马上落地，如何去做，应注意些什么?如果需要耗油，注意些什么？(Case Analysis) One day a flight (CR900) flying from Chongqing to Hohhot, after take-off, a smoke warning message appeared in the AFT cargo compartment. After the crew executed the checklist, the smoke in the AFT cargo compartment persisted, and the current landing weight was 36 tons. Questions: should the crew land immediately or hold for fuel consumption? If land immediately, how should you do, what should you pay attention to? If fuel consumption was required, what should you pay attention to?

飞机从逆风进入顺风时所遇到的风切变称为

A. 顺风切变

B. 逆风切变

C. 水平风切变

MFD范围距离圈最大可以调到：The MAXMIUM range scales on MFD can be extended to

A. 10NM

B. 40NM

C. 80NM

D. 640NM

判断正误True or False：飞机在地面准备起飞时，如果燃油不平衡值超过136kg，会有信息FUEL IMBALANCE显示。As then aircraft on the ground and ready for takeoff，if the imbalance exceeds 136kg，FUEL IMBALANCE caution message appears.

当距离跑道头还有多远时雷达管制员不能再要求飞行员调速。

A. 3NM

B. 4NM

C. 5NM

判断正误True or false：显示在EICAS主页的EMER PWR ONLY警告信息指示失去所有正常交流电源后，ADG已放出。The EMER PWR ONLY warning message displayed on EICAS primary page indicates that ADG has deployed after loss of all normal AC electrical power.

飞行员在飞行中发现前方的云有如下特征：孤立分散的小云块，底部平坦，顶部呈圆弧形凸起，
象小山丘。这种云应是＿＿

A. 浓积云；

B. 淡积云；

C. 层积云

距目的地机场约140-160 海里或下降顶点前60-80 海里，（ ）接通讯，指令（ ） 收听计划着陆机场ATIS 或向塔台询问着陆条件。About 140-160 nautical miles from the destination airport or 60-80 nautical miles before top of descent, ( ) takes communication, and direct ( ) to listen to ATIS of the planned landing airport or ask for landing conditions from the tower.

A. 机长；副驾驶 captain; copilot

B. 副驾驶；机长 copilot; captain

C. PF;PM

D. PM;PF

执行标准目视进近，飞机（襟翼45放出)机动飞行中，为防止机动失速，四转弯速度不得小于（）速度？
To implement a standard visual approach, in order to prevent maneuvering stall, the speed for the fourth turn should not be less than ( ) during maneuvering of the aircraft (flaps 45 deployed)?

A. VREF

B. VREF+5

C. VREF+10