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密度是物质的属性之一,至今人们知道具有最大密度和最小密度的物质分别是(   )

A:黑洞、星际物质

B:中子星、慧星

C:巨星、氢气

D:白矮星、氢气

上一题 下一题 0.0难度 选择题 更新时间:2017-10-31 12:37:48

答案(点此获取答案解析)

A

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