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△p×△q>h/4π中,“h”指的是()。
人员任用的内容不包括()。
小组规范的类型主要有()。
有一次,女教师画了一个圆圈儿问大学生:“这是什么?”大学生思考良久,底气不足地说了一句:“可能是零。”又一次女教师画了个同样的圆圈儿问一群小学生:“这是什么?”孩子们立即七嘴八舌地回答:“是太阳”“是烧饼”“是足球”“是西瓜”“是老师的大眼睛”……女教师听了,不由得目瞪口呆。你对这一现象有什么看法?请从培养学生创新精神和实践能力的理念分析。
光化学烟雾是由下列哪些环境污染物在强烈的太阳紫外线作用下,发生光化学反应而形成的一种浅蓝色烟雾()。
破伤风梭菌可导致( )。
要确定一个地区的自然资源优势,通用的方法是自然资源综合优势度评价方法。
下列不符合肿瘤的特点的是()
老年人容易出现哪些合并症?
简述要约和要约邀请的区别?
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