造成胶带打滑的主要原因有哪些?
参考答案:
造成胶带打滑的主要原因有:
胶带负荷过重、传动轮的包胶磨损严重或因有水和泥浆、拉紧装置坏或失效、坏死的托轮过多。
On hearing the news that his mother was seriously ill, he went to his boss and asked for a _____. [ ]
A. vacation
B. holiday
C. leave
D. rest
症见睾丸冷痛,或小腹疼痛,疝气痛,畏寒喜暖,舌淡苔白,脉沉迟。选下列何方治疗最佳()
A.枳实薤白桂枝汤
B.暖肝煎
C.天台乌药散
D.厚朴温中汤
E.金铃子散