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?