车轴（）、车轴轴箱温升超过规定或有异响时，轨道车禁止使用。
A.有裂纹
B.有弯曲
C.有轮轴配合松动
D.未探伤
参考答案：A
补全对话。
A: 1______ me, Bill. Can you 2______ me? I can't find 3______ pencil.
B: Isn't it 4______ your bag?
A: No, it 5______.
B: Please look 6______ it's under the desk.
A: Oh, it is over there. Thank you very 7______.
B: 8______ all 9______.
A: It' s time 10______ go to the classroom.
B: Let' s go.
履带“脱裤子”原因？
