题目内容：
植物磷素营养的临界期一般出现的幼苗期。
A.正确
B.错误
参考答案：
选择题：植物磷素营养的临界期一般出现的幼苗期。
- 题目分类：中国大学MOOC慕课
- 题目类型：选择题
- 查看权限：VIP
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