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问题 单项选择题

在受精作用过程中，体现受精实质的是（）

A.同类生物的精子和卵细胞互相识别

B.精子的头部进入卵细胞

C.卵细胞膜增厚形成受精卵膜

D.精子核与卵细胞核互相融合

答案

参考答案：D

单项选择题

属于我国目前的财政法规体系的法规有( )。

A．经济法

B．金融法规

C．税收法规

D．劳动法
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单项选择题

Alien Chen, CFA, stated that, for the typical company, accounting profit tends to be greater than economic profit because explicit costs are generally not included in calculating accounting profit. Is the analyst correct with respect to the: Relationship between accounting, profit and economic profit Inclusion of explicit costs （） ①A. No No ②B. No Yes ③C. Yes No

A. ①

B. ②

C. ③
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