单选题Which of the listed devices could be used as a ring groove tool during preparation for the installation of new rings?（）ASteel brushBFine emery cloth or steel woolCA section of the removed compression ringDA case hardened scraper
单选题
Which of the listed devices could be used as a ring groove tool during preparation for the installation of new rings?（）
A
Steel brush
B
Fine emery cloth or steel wool
C
A section of the removed compression ring
D
A case hardened scraper
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