属于人口规模预测方法中“劳动平衡法”的是( )。
A．依据“按一定比例分配社会劳动”的基本原则，根据国民经济与社会发展计划的相关指标和合理的劳动构成，以某一类关键人口的需求总量乘以相应系数得出小城镇镇区人口总数
B．建立在“按一定比例分配社会劳动”的基本原理上，以社会经济发展计划确定的基本人口数和劳动构成比例的平衡关系来估算城镇人口规模
C．将自然增长和机械增长两部分叠加，是镇规划时普遍采用的一种比较符合实际的方法
D．根据小城镇周边区域自然资源的最大、经济及合理供给能力和基础设施的最大、经济及合理支持能力计算小城镇的极限人口容量
参考答案：B
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