目前，我国邮政法尚未制订出来，国内不少单位尚不了解我国邮政是统一经营管理的。

At present, a law for postal service has not been formulated in China and many units do not know that the postal service in China is under unified management and administration.

在投入相同的生产要素和政策要素下，农业的产出也有不同。综合比较后认为：“所有权农民私有、合作或适度统一经营”是相对较好的制度。

The results show that under different land ownership structures, the input of the factors of production will differ, leading to variation in agricultural outputs.