【单选题】【消耗次数：1】
若气缸体为铸铁材料， 而气缸盖分别为铝合金和铸铁材料时， 正确安装气缸垫的方法为其卷边面应分别朝向
①
气缸盖、 气缸盖
②
气缸体、 气缸体
③
气缸盖、 气缸体
④
气缸体、 气缸盖
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相关题目
【单选题】
在安装气缸盖时， 拧紧气缸盖螺栓正确的方法是
①
由中央对称地向四周按规定扭力分 2～3 次均匀拧紧
②
由中央对称地向四周按规定扭力一次拧紧
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由四周对称地向中央按规定扭力一次拧紧
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由四周对称地向中央按规定扭力分 2～3 次均匀拧紧
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