单选题舵机主油路锁闭阀在主泵()时可不设。A密封性能好B主油路有泵阀C设有防反转装置D有制动装置
单选题
舵机主油路锁闭阀在主泵()时可不设。
A
密封性能好
B
主油路有泵阀
C
设有防反转装置
D
有制动装置
参考解析
解析:
暂无解析
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