钨的熔点是3 410 ℃,那么在3 410 ℃ 时钨处于下面哪种状态(    )

钨的熔点是3 410 ,那么在3 410 时钨处于下面哪种状态(   

A.固态               B.液态                 C.固液共存态             D.以上三种情况都可能

答案

D

【解析】

试题分析:如果是固态钨温度达到3 410 时不能从周围吸热,则钨仍处于固态;如果达到3 410 时又能从周围吸热,则钨会熔化,处于固液共存状态;当钨恰好熔化完毕后,就不再继续吸热,则此时的钨处于液态。

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