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DQ and DQ2 are the two types bearings produced by Glacier Metal Co. Ltd. by dispersing brass and Pb respectively.
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DQ and DQ2 are the two types bearings produced by Glacier Metal Co. Ltd. by dispersing brass and Pb respectively.
Posted:
Thu Jul 14, 2022 1:26 pm
by
answerhappygod
a) True
b) False