500本金计划表图简介:Whether the Cao River is smooth or not is directly related to the efficiency of water transportation. Water transportation is sufficient for the national economy, so dredging the Cao River has become a basic responsibility of the governor of water transportation, which mainly includes building dams, setting up sluices, opening new canals, dredging rivers, etc.
Whether the Cao River is smooth or not is directly related to the efficiency of water transportation. Water transportation is sufficient for the national economy, so dredging the Cao River has become a basic responsibility of the governor of water transportation, which mainly includes building dams, setting up sluices, opening new canals, dredging rivers, etc.