They are screwdriver,ring spanner, combination pliers etc. We can not change the motor oil and oil filter without these maintenance tools. 译文: 它们是( )、( )、( )等,没有它们我们就不能更换( )和( )。
【简答题】Study the following graph carefully and write an essay. You should: 1) describe the graph and interpret its meaning, and 2) point out the problems and give your comments. Your composition should be mo...