(1) There are about 160 days in a year when the daily average wind speed is not less than 3m/s, of which about 60 days are when the daily average wind speed is not less than 6m/s, then the daily average wind speed is 3≤v≤6 The time is 100 days. According to the question, the annual power generation of type A wind turbine is at least 100×36+150×60=12600kw?h.
Then the annual power generation of x type A wind turbines is at least 12600x kw?h ．
(2) If x units of type A wind turbines are purchased, then the number of type B wind turbines is (10-x) units,
According to the question
< p>Solve this set of inequalities to get 5≤x≤6Then x=5 or 6,
10-x=5 or 4
So, you can Purchase 5 A-type wind turbines and 5 B-type wind turbines, or you can purchase 6 A-type wind turbines and 4 A-type wind turbines.
Suzhou Ye Shengtao Experimental Primary School, formerly known as Luzhi Primary School, is located in Luzhi Town, Wuzhong District, Suzhou City. Luzhi Town is the place where Mr. Ye Shengtao, a great master in the field of education in China, worked in his early years. He is called his "second hometown" by Mr. Ye.
The school covers an area of 60 acres, with five teaching buildings with a total construction area of 14966m2. The general classrooms and special classrooms in the education building are equipped at a ratio of 2:1, including 1144m2 of ladder-shaped multimedia special classrooms, 720m2 of wind and rain activity rooms, 700m2 of libraries, 4 special computer rooms, 3 music rooms, 4 science rooms, and 2 art rooms. , 1 dedicated classroom each for labor skills, psychological counseling, health care, speech, Young Pioneers team room, TV studio, etc. All special classroom teaching equipment, instruments, books and materials meet provincial standards. The school has a vast sports activity area for teachers and students: a 250m circular track, a 120m straight standard plastic track and field and a football field, 2 basketball courts and volleyball courts, 16 table tennis tables, large-scale combined activity equipment, etc.
The whole school has a green coverage of 15829m2, with hundreds of varieties of flowers, plants and trees, evergreen all year round, and flowers every month; one acre of land is allocated for a pond community, and another acre is divided into experimental fields. , wind turbines, weather stations, etc. have also been installed as a base for comprehensive practical courses.
The school currently has more than 2,000 students and offers 47 teaching classes. There are 111 faculty members and 103 full-time teachers. Among them, 41.8% have a bachelor's degree, 48.5% have a junior college degree, 9.7% have a secondary school education, 1 special-grade teacher, 7 with secondary or senior professional titles, and 54 with junior or senior professional titles. Among them, there are also 50 key teachers including national outstanding teachers, famous teachers in Jiangsu Province, Suzhou City's Ten Outstanding Teachers, Suzhou City's academic leaders in teaching and scientific research, and provincial, municipal, and district course evaluations and advanced and outstanding head teachers in various types of education. The two school-level leaders all have bachelor's degrees. They have participated in the national backbone teacher training, have graduated from the master's degree program in education at Suzhou University, and are currently studying in the master's degree program in education at Nanjing Normal University; the schoolThe members of the middle-level team are young, powerful, of high moral character, each responsible for a discipline, and have high teaching influence.