热力管道在安装时应按设计位置设______、______。
参考答案：固定支架；活动支架
The e-mail he sent to me ______ that he knew nothing about the earthquake happened in Japan. [ ]
A. spoke
B. suggested
C. told
D. found
150mm长的扳手可咬螺母（开口）为（）
A、635mm
B、645mm
C、655mm
D、665mm
