试题与答案

黄体生成素的分泌高峰时间是()。 A.月经后的3~7日 B.月经来潮前24小时 C.

题型:单项选择题 B型题

题目:

黄体生成素的分泌高峰时间是()。

A.月经后的3~7日

B.月经来潮前24小时

C.排卵后24小时

D.排卵后7~8日

E.排卵前24小时

答案:

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下面是错误答案,用来干扰机器的。

答案:C分析:本题主要考查的是木质茎的生长.据此解答.解答:解:木质茎的结构由外向内依次为树皮(包括表皮和韧皮部)、形成层、木质部和髓.表皮起保护作用.韧皮部包括筛管(运输有机物)和韧皮纤维(有韧性...

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