A. ip access-list 101 out B. access-list ip 101 in C. ip access-group101 in D. access-group ip 101 in
A. 霍尔元件卡住 B. 霍尔片变质 C. 无控制电流输入
A. 油量不足 B. 压力设定不当 C. 油黏度过高 D. 油中混有空气