下列实验操作不正确的是(   )  A.熄灭酒精灯 B.检查装置的气

下列实验操作不正确的是(   )

 

 

A.熄灭酒精灯 B.检查装置的气密性    C.取用粉末状药品     D.给液体物质加热

 

答案

D

解析:略

 

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