The parking brake is a ( ) brake with ( ) control. A: electro-dynamic, active B: electro-dynamic, passive C: pneumatic, passive D: pneumatic, active

“pneumatic circuit”的意思（）

【多选题】空气制动可以用哪些英文表达 A. pneumatic brake B. air brake C. friction brake D. regenerative brake

What’s the type of the control system on CFM56-3 engine? ( ) A: pneumatic mechanical system B: EEC system C: FADEC system D: hydro-mechanical system

______ is mainly used in light aircraft, and also be used for emergency on many large aircraft. A: Starting system B: Hydraulic system C: Anti-ice and deicing system D: Pneumatic system

气动（pneumatic）是“气动技术”或“气压传动与控制”的简称，是以压缩空气为工作介质进行能量传递和信号传递的一门技术。

The Wartsila RT-flex and MAN Diesel& Turbo()ME engine designs offer similar approaches to the electronic control of starting air and also to the electronic control and ____operation of the exhaust valve. A: mechanical B: Pneumatic C: hydraulic D: automatic

The Wartsila RT-flex and MAN Diesel& Turbo（MDT）ME engine designs offer similar approaches to the electronic control of starting air and also to the electronic control and ____operation of the exhaust valve. A: mechanical B: pneumatic C: hydraulic D: automatic

______ is mainly used in light aircraft and only used for emergency on many large aircraft, and its operation medium is ______. A: starting system, oil B: hydraulic system, compressed air C: elevator, hydraulic fluid D: pneumatic system, compressed air

Propulsion control systems are generally composed of .1) Remote control device；2) telegraph system；3) Logical control unit；4) Speed and load control unit；5) Safety protection unit；6) Main engine pneumatic control system A: 1) 2) 3) 4) 5) 6) B: 1) 2) 3) 4) 5) C: 1) 2) 3) 6) D: 2) 3) 4) 5) 6)