清理焊割缝的工具有（）。A、钢丝刷 B、凿子 C、手锤 D、锉刀 E、扳手

It was for that reason, I suppose, ____ the book took a long time to come out.[ ]

A. why

B. so

C. that

D. because

—Is this _______ notebook?

—No, it isn't _______. [ ]

A. theirs; their

B. hers; his

C. your; mine

D. your; my

特殊法理学（奥斯丁）

客车行经转弯、上下坡、凹凸路时，应让乘客抓住车内固定物，尤其提醒后排乘客注意安全。

简述火灾、爆炸的紧急救援措施？