According to the international rule, the table tennis game is played with a sphere having a mass of 2.7 g and a diammiter of ___

According to the international rule, the table tennis game is played with a sphere having a mass of 2.7 g and a diammiter of _____. ( )

A.38 mm

B.40 mm

C.48mm

D.50 mm

正确答案:40 mm

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