限制煤气流速，可以大大减少静电的产生和积聚。
参考答案：对
In LA Lingling lived with ______ Smiths and got on well with the host family. [ ]
A. a
B. the
C. /
当供给供电器的电力线路与有线电视电缆同杆架设时，供电线材应采用绝缘导线，并应架在电缆的上方，与电缆的距离应大于0.6m。( )
