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【单选题】
润滑油在使用中变质的主要表现有流动不均匀、光照下可看到磨屑、色泽浑浊和( )。A.
手捻感觉粗糙有摩擦感
B.
燃烧点变化
C.
快速挥发
D.
色泽浑浊发出异味
拍照语音搜题，微信中搜索"皮皮学"使用
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