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一个100 cm3的铜球(铜的密度为8.9×103 kg/m3),用天平测出它的质量为
一个100 cm3的铜球(铜的密度为8.9×103 kg/m3),用天平测出它的质量为
一个100 cm
3
的铜球(铜的密度为8.9×10
3
k
g/m
3
),用天平测出它的质量为100 g,那么这个铜球的内部
A.一定是实心的
B.一定是空心的
C.一定装满了水
D.一定是装有其它金属
答案
B解析:
略
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