当天线支撑体使用通信管塔(或杆塔)时,宜围绕管塔()远范围设置封闭环形(矩形)接地装置,并与通信管塔地基钢板四角焊接连通。
A.3m
B.0.5m
C.5m
D.10m
参考答案:A
Explain FIVE advantages of incorporating a company under the Companies Act 1965, as opposed to other forms of business organisation. (10 marks)
中耕作业的目的?