Along the Pilatus Mountain Railway, the teeth of the wheels on the track gear into those at the bottom of the train to drive the train forward.
A.正确
B.错误
正确答案:正确
Along the Pilatus Mountain Railway, the teeth of the wheels on the track gear into those at the bottom of the train to drive the train forward.
A.正确
B.错误
正确答案:正确