对于煤层顶、底板带压的采掘工作面，应提前编制防治水设计，制定并落实水害防治措施。
参考答案：对
____ from his appearance, he must be from the north.
A．Judging
B．Judge
C．Judged
D．To judge
三相异步电动机机座一般采用（）制成。
