23. In 1975, the largest geothermal power station in our country was $\qquad$
A. Yangyi Geothermal Station
B. Langjiu Geothermal Station
C. Yangbajing Geothermal Power Station
D. Naqu Geothermal Station
【Answer】C
【Analysis】The Yangbajing Geothermal Power Station located in Dangxiong County, Lhasa City, Tibet, is the largest geothermal power station in China. In 1975, the Regional Industry Bureau organized a test team to install a self-developed 50-kilowatt generator set in the Yangbajing geothermal field, which successfully generated power. In 1977, the National Science and Technology Commission approved the construction of a 1000-kilowatt unit at Yangbajing. By 1992, a total of 9 units had been installed at Yangbajing, with a total capacity of 25,180 kilowatts. The Tibet Geothermal Engineering Office, the Development Company, and over 80 units and more than 10 research institutes across the country jointly tackled the technical challenges of Yangbajing geothermal power generation, basically solving a series of technical problems in the development and utilization of medium- and low-temperature geothermal resources, including scaling, corrosion, thermal system design, steam turbine generator and auxiliary equipment development, power station operation procedures, and environmental protection. The successful development of the Yangbajing power station marks that China's geothermal utilization has reached world-leading levels.