成本报表的分析方法有()
A. 比较分析法
B. 比率分析法
C. 因素分析法
D. 计划成本分配法
词汇与结构The automatic flight control systems (AFCS) consist of three independent systems: digital flight control system (DFCS), yaw ________ system, and autothrottle system.
A. bracer
B. damper
C. slipper
D. chamber
词汇与结构The automatic flight controlsystems provide automatic airplane ________ about the pitch, roll, and yaw axes and control the airplane with selective guidance from radio, heading, flight management computer, and air data computer inputs.
A. accomplishment
B. establishment
C. stability
D. stabilization
词汇与结构The DFCS system is a ________ system which operates the elevators and ailerons to automatically maintain altitude, airspeed and/or guide the airplane to designated locations and make automatic landings.
A. two-axis
B. one-axis
C. none-axis
D. triple-axis