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泵较长采用的是()调节。A、入口调节B、出口调节C、出入口节流...
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转机转速700转/min,振动值应小于()。A、0.6mmB、0.12mmC、0.10mm...
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下列属于安全电压的是()。A、36VB、110VC、220V...
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减速箱和变速箱是主动机与从动机部件之间变换速度的机构。...
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