每年( )前，完成《年度内审工作计划》的批准

At high engine speed,the high presure valve(HPV) is ____.

The( )converts variable speed shaft power directly into constant frequency 400 Hz AC electrical power.

TO DISCHARGE STATIC ELECTRICITY, THE AIRCRAFT HAS:

We’ll have to( )to the idea even though we don’t like it.

What connects the low-pressure rotor and the high-pressure rotor?

The center fuselage is constructed of( ).

IF ONE FLAP PCU MOTOR FAILS:

THE ENGINE FIRE BOTTLES ARE LOCATED:

THE MAXIMUM NORMAL CABIN ALTITUDE IS:

A320飞机，基本代码400是代表哪一区域？