试题与答案

伺服油缸式舵机遥控系统三位四通电磁换向阀中位机能通常采用()。A.H型 B.M型 C

题型:单项选择题

题目:

伺服油缸式舵机遥控系统三位四通电磁换向阀中位机能通常采用()。

A.H型

B.M型

C.O型

D.Y型

答案:

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