A.803、809 B.806、807 C.803、805
A.电空位制动缸不保压 B.空气位制动缸不保压 C.电空位与空气位制动缸均不保压 D.制动缸不缓解
A.70% B.54% C.45%
A.0.5S B.1S C.1.5S
A.缓解电空阀故障 B.压力开关209故障 C.制动电空阀故障
