下列城市人口规模预测方法中，哪项是可以单独应用并作为主要预测结果的方法（）
A.综合平衡法
B.环境容量法
C.区域人口分配法
D.类比法
参考答案：A
解析：城市人口规模预测主要方法有五类：综合平衡法、时间序列法、相关分析法（间接推算法）、区位法、职工带眷系数法。另外还有3类方法不宜单独作为预测城市人口规模的方法，但可以作为校核方法使用：环境容量法（门槛约束法）、比例分配法、类比法。
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