1. (2020六上·广元期中) 连线题

螺丝钉                                   大桥中的引桥

                          斜面

门把手                                   窗帘轨

杠杆

  镊子                                     汽车方向盘

                          轮轴

  轱辘                                     起钉锤

                        滑轮

吊车                                     吃饭用的筷子