相关题目
The （ ） was one of the first instruments to be installed in an airplane, and it is still the only direction seeking instrument in many airplanes.
The （ ） , also called a directional gyro, senses yaw movement of the airplane about the vertical axis.
The （ ） is a vacuum-powered instrument which senses pitching and rolling movements about the airplane＇s lateral and longitudinal axes.
The （ ） senses yaw and roll movement about the vertical and longitudinal axes.
The （ ） measures how fast the ambient air pressure is increasing or decreasing when the aircraft climbs or descends.
Which of the following is not included in gyroscopic instruments?
The three gyroscopic instruments are （ ） ．
The （ ） senses pressure changes and displays the vertical elevation of an object above a given reference point.
The （ ） displays the speed of the airplane through the air by comparing ram air pressure with static air pressure.
The pitot-static instruments operate on the （ ） principle.
