×
单选题
127.The intermediate pressure check valve [IPCV]prevents air in the HP/IP manifold from going into the fourth stage bleed air source( )
A
The intermediate pressure check valve prevents air from the fourth stage into the HP/IP manifold.
B
The intermediate pressure check valve prevents air from going into the fourth stage bleed air source.
C
The intermediate pressure check valve is interchangeable with the bleed valve.
答案解析
正确答案：B
