人在长跑后,因流汗过多常出现抽搐现象,这是因为血液中哪种离子

人在长跑后,因流汗过多常出现抽搐现象,这是因为血液中哪种离子含量太低?

A.K+              B.Na+             C.Ca2+            D.Mg2+

答案

C

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