A、(A)50m
B、(B)200m
C、(C)400m
答案:A
A. (A)制动缸
B. (B)降压风缸
C. (C)工作风缸
A. A、LLC→LC→C1~C6
B. B、C1~C6→LC→LLC
C. C、LC→C1~C6→LLC
解析:解析: J440
A. (A)均无效
B. (B)一端有效
C. (C)均有效