【填空题】
165.1号机顶轴油泵在无___低信号时允许启动。
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入口油压
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【填空题】
197.1号机高压缸通风阀主要目的是排掉汽轮机高压缸叶片___损失产生的热量,以避免叶片和内缸___，并列后关闭 。另一个作用在汽机跳闸时高排通风阀打开，有助于高压缸___排出，防止___。
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B. Who told you that?
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【单选题】
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