一只未点燃的蜡烛的下面插入一根小铁钉,使蜡烛能直立漂浮在水面

一只未点燃的蜡烛的下面插入一根小铁钉,使蜡烛能直立漂浮在水面上,露出长度为L,如图所示。当把蜡烛水面以上部分截掉后剩余部分:

A.不会重新露出水面    B. 还会重新露出水面   

C.以上两种可能都有     D.无法判断

   

答案

  B

 

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