节能的途径有哪些？
参考答案：
管理节能、技术节能、结构节能。
—Where is your father working?
—In a hospital_____ in the city of Huai’an.
A．is located
B．locating
C．located
D．being located
设备发生故障，不能用钻机活动钻具时，该怎么办？
