【单选题】【消耗次数:1】
电液伺服阀的液压放大器常用的形式有滑阀、射流管和喷嘴挡板三种。该说法( )
正确
错误
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【判断题】 电液伺服阀通常由电气-机械转换装置、液压放大器和反馈(平衡)机构三部分组成。该说法( )
①  正确
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【判断题】 电液伺服阀是电液伺服系统中的放大转换元件,它把输入的小功率电流信号,转换并放大成液压功率输出,实现执行元件的位移、速度、加速度及力控制。该说法( )
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①  正确
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①  正确
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①  正确
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①  正确
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①  正确
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