1. Civil servants have stable jobs, and their salaries and benefits will increasingly improve through career advancement.
2. The power station is an enterprise, and the salaries and benefits are certainly higher than those of civil servants, but they have little development prospects and no social status, and they cannot see their future development clearly. You see, businesses that were thriving ten or twenty years ago are now plagued by layoffs and bankruptcy.
3. Each has its own advantages and disadvantages. It all depends on your own mentality. Being a civil servant means a mediocre and meager income.
In short, it is - single blade type: under the same size, in order to obtain the same amount of energy, single blade type requires higher speed, and at the same time , this means more noise, visual pollution, greater ecological impact; aunbalanced rotation, the need for counterweight, the advantages of high speed - lower ratio gearbox, lighter mass are weakened and low efficiency; So there is no cost advantage. Double blade type: The advantages and disadvantages are similar to the single blade type; Three-blade type: It can achieve its own dynamic balance, has lower speed, low noise, and is not easily hit by birds. More blades: low speed, requiring a high ratio gearbox, heavy, causing problems in manufacturing, installation, operation and maintenance, easy to hit birds, oh, no, these are d blows 'birds ; (The blades are relatively large in size, with a diameter of up to tens of meters.) In summary, three-leaf blades are most suitable.