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2检验不能用于（）
A.两个分类变量间有无相关关系
B．两个或多个样本均数的比较
C．多个率的趋势检验
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E．推断两个及两个以上总体率或构成比是否有差别
B．两个或多个样本均数的比较
C．多个率的趋势检验
D．两个率的等效性检验
E．推断两个及两个以上总体率或构成比是否有差别
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问答题
受太阳辐射强度、日照小时数及连续阴雨天数等自然气候条件的限制，需配备较大容量的蓄电池（环境温度影响蓄电池寿命和充放电能力，有少量的维护工作），占地面积较大。Subject to the limitation of natural climate conditions such as solar radiation intensity, sunshine hours and continuous rainy days, the battery with larger capacity should be equipped (ambient temperature affects battery life and charging and discharging capacity, and there is a small amount of maintenance work), occupying a larger area.
受太阳辐射强度、日照小时数及连续阴雨天数等自然气候条件的限制，需配备较大容量的蓄电池（环境温度影响蓄电池寿命和充放电能力，有少量的维护工作），占地面积较大。Subject to the limitation of natural climate conditions such as solar radiation intensity, sunshine hours and continuous rainy days, the battery with larger capacity should be equipped (ambient temperature affects battery life and charging and discharging capacity, and there is a small amount of maintenance work), occupying a larger area.
答案：
由于太阳能发电系统受太阳辐射强度、日照小时数以及连续阴雨天数等自然气候条件的限制，因此需要配备较大容量的蓄电池以确保在不...
