相关题目
The pitot-static instruments operate on the （ ） principle.
All three pitot-static instruments use （ ） while the airspeed indicator alone uses （ ） ．
The airspeed indicator, altimeter, and vertical speed indicator all use static pressure, but only the （ ） uses pitot pressure.
One group of flight instruments operates on the principle of pressure differential to provide the pilot with speed, rate of climb or descent, and altitude, this group is referred to as the （ ） instruments.
The pitot-static system includes three instruments, they are （ ） ．
The static port is used to measure （ ） ．
The instrument connected to the dynamic and static pressure system is called （ ）.
The （ ） is used to measure static air pressure.
The （ ） is used to measure ram air pressure.
The tail assembly is sometimes referred to as the （ ） ．
