把2米长的铁丝平均截成5段，每段长是0.4米．______．
2÷5=0.4（米）；
答：每段长0.4米．
故答案为：正确．
When the teacher came in, all the students stopped ______.[ ]
A. to talk
B. talk
C. talking
D. talked
采用“牵引辅助制动法”施行旅客列车站外调速时，应如何操纵？
