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2018-08-12View Original

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8催化的焦化重整油品调和版
Reply #22018-08-12
2参与:奖励财富;回答正确:奖励3财富;注:本帖有效时间为48小时。 单选题题:向高温离心泵的机械密封的密封端面低压侧输入冷却水,主要用于(  )。 A、冷却机械密封温度 B、将介质与空气隔绝 C、灭火 D、保持机械密封温度 答案: A 您的的的参,,,,,就是我们我们们工作的最大的支持支持。送送走玫瑰,手手留余香。https://bbs.hcbbs.com/static/image/hrline/1/b.gif https://bbs.hcbbs.com/static/image/hrlineline/2212注:两天后答案自动公布公布。 ““我的装置我的家” 大型原创照片分享活动活动(第二期) https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=186868&extra=page%=2DD 【一答一D】催化的焦化重整油品调和和1186868D2汇总贴贴~~持续更新中中 https】https httpshttps://bbs.hcbbs.com/threadD1186868D---.html 【每日一题题】催化的焦化重整油品调D21186868D11118年年汇总贴贴~~持续更新中中D】Dhttps

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