what does" 冲压空气管道" mean in English ?
A.fire handle;
B.variable displacement;
C.guarded switch;
D.ram air duct;
正确答案是D
what does" 冲压空气管道" mean in English ?
A.fire handle;
B.variable displacement;
C.guarded switch;
D.ram air duct;
正确答案是D