Uses of Motor Graders. Their basic function is to flatten the ground. Civil engineers use to it to finish after the rough work has been done by the scrapers and bulldozers. The name âmaintainerâ refers to the fact that a grader is used to maintain dirt and gravel roads.
BlueMedicare Regional PPO (Regional PPO) is a Regional PPO. A preferred provider organization (PPO) is a medicare plan that has created contracts with a network of preferred providers for you to choose from at reduced rates.
HumanaChoice(PPO) Â® is a Medicare Advantage Preferred Provider Organization (PPO) plan that gives you freedom to choose which doctors, specialists and hospitals you visit.You can help lower your costs when you use network providers.umanaChoice (PPO) plans give you all the benefits of Original Medicare and more, including: 1  Prescription drug coverage (some plans do not include drug coverage). 2  Emergency coverage when you travel outside the U.S. 3  Find a plan in your area.