按GB/T3956-1997《电缆的导体》的规定,第5种软导体截面50m㎡导体中铜单线最大直径为()。
参考答案:0.41mm
There is no ________ in trying to talk George into joining us. He enjoys being alone.[ ]
A. doubt
B. wonder
C. hope
D. point
信息技术的发展,使地球正在变小,组织结构正在变得()
A、简单化
B、分散化
C、复杂化
D、多样化