氰化物中毒是由于抑制了哪种细胞色素（）
A.cytc
B.cyta
C.cytb
D.cyta3
E.cytcl
参考答案：D
根据所给英文和音标写出相应的汉语意思。
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企业家进行创新的直接原因（）。
A.获得人力资本
B.实现企业家才能
C.得到社会的尊重
D.获取垄断利润和创新利润
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