08-32型捣固车每工作50h应对捣固装置横移导向套进行润滑。
参考答案：对
—Mr. Green was born in China.
—It’s no _____ he can speak Chinese so well.
matter B. doubt C. wonder D. problem
小芬和小刚分别从一条跑道的两端相对走来，小芬走了55米，小刚走了70米，这是两人相距10米，跑道长多少米？
