Hard materials have good resistance to()and().
Hard materials have good resistance to()and().
A.Wear
B.Impact
C.Abrasion
D.Torsion
正确答案:Wear;Abrasion
Hard materials have good resistance to()and().
A.Wear
B.Impact
C.Abrasion
D.Torsion
正确答案:Wear;Abrasion
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