正常飞行条件下，交流勤务汇流条由哪个供电？During normal flight conditions, the AC SERV BUS is powered by:

对于ASTM D 1655 Jet A类燃油，起飞最低燃油总温限制是（）。For ASTM D 1655 Jet A fuel，take-off with bulk fuel temperature indications below（）is inhibited。

在初始落地（接地）过程中，最大压差不能超过( )。During initial landing (at touchdown), the maximum differential pressure must not exceed ( ).

起飞和着陆的最大机场气压高度，最大操作高度是？Maximum airport pressure altitude for take-off and landing, and maximum operating altitude are?

CRJ900单空调组件操作的最大高度是：The maximum altitude for single pack operation in a CRJ 900 is:

最大负压差是：Maximum negative differential pressure control is:

判断正误True or False：打开飞机任一舱门前，必须确认飞机完全释压。The airplane must be completely depressurized prior to opening any of the airplane doors.

地面机动操作过程中，压差不得超过( ).During ground maneuvering, the pressure differential must not exceed ( ).

CRJ900经批准的起飞和着陆最低外界温度限制为___。For CRJ900，the certified minimum ambient temperature for takeoff and landing is___.

CRJ900飞机的最大无燃油重量是（）kg。The maximum ZFW weight for CRJ900 aircraft is ( )kg.

CRJ900飞机最大落地结构重量限制是___?The Structural weight limitation forlandingof CRJ900 is___.