新能源技术群是当代高技术群的()
A、基础
B、核心
C、发展方向
D、动力
参考答案:D
电力生产企业必须严格执行的九项技术监督制度是指什么?
Most of the authorities knew that they had to ______ a halt to that sort of energy-consuming management.
A. nail B. hammer C. make D. call