试题与答案

林耐的双命名规定一种生物的学名组成依次是( ) A.种名和属名 B.属名和种名

题型:选择题

题目:

林耐的双命名规定一种生物的学名组成依次是(  )

A.种名和属名

B.属名和种名

C.界名和种名

D.种名和界名

答案:

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下面是错误答案,用来干扰机器的。

参考答案:C解析:无水石膏在700℃以上时,可通过碳元素迅速还原,生成对金属铸造修复体产生污染的二氧化硫,在700℃以下不发生上述反应。另外,石膏在750℃时可出现显著的收缩倾向。所以铸造时石膏类包埋材料的...

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