Engine bleed air comes from the 5th and 9th stages of the high pressure compressor.A high stage regulator and high stage valve controf the flow of 9th stage bleed air.The 5th stage check vaive prevents reverse flow into the 5th stage. A bleed air regulator and the pressure regulator and shutoff valve(PRSOV) control the flow of bleed air to the pneumatic manifold.根据上文，以下哪项是错误的
发布于 2021-02-10 00:05:56
【单选题】 A "发动机引气来自于高压压气机5级和9级 " B 5级引气的 单向活门使反流进入 5 级压气机。 C 一个高压级调节器和高压级活门控制9级引气。 D 一个引气调节器和压力调节及关断活门(PRSOV)控制进入气源总管的引气
