文档介绍：给人改变未来的力量
several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3世纪50年代初期确定的，当时我国人口预期寿命不到50岁，现在国情发生了巨大变化，人口的预期寿命已达70多岁，有必要根据实际情况进行调整。
当前，我国正面临人口老龄化的巨大压力，劳动力供应形势严峻。
据预测，%。目前，：1，也就是3个人养1个人，到 ：1，。从国际上看，延迟退休年龄是各国应对人口老龄化的普遍做法。自1989年以来，世界上有170个国家 延迟了退休年龄。
给人改变未来的力量
several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measurement, such as proceeds of c values are equal and equal to the design value, then the vertical installation accurate. For example a, b, and c valueswhile on horizontal vertical errors for measurement, General in iron angle code bit at measurement level points grid errors, specific method is from baseline to methyl vertical box center line distance for a,, to b vertical box distance for b, list can measured
several group number, then with b ± a, =c,c is is methyl b two vertical box between of accurate size. Per-2~3 measurement, such as proceeds of c values are equal and equal to the design value, then the vertical installation accurate. For example a, b, and c valueswhile on horizontal vertical errors for measurement, General in iron angle code bit at measurement level points grid errors, specific method is from baseline to methyl vertical box ce