语言信息是从哪个角度进行归类的()
A、获取渠道
B、载体
C、状态
D、谈判过程
参考答案:B
_______ many times , he still couldn’t understand it.
A.Told
B.Having been told
C.Having told
D.He had been told
实际生产中,焊条电弧焊控制焊接速度的可行办法是控制每根焊条的焊接长度。()