加氢催化剂采用蒸汽----空气烧焦法再生，先通入蒸汽是为了吹扫床层，加快再生速度。
参考答案：对
下列句子中各有一处错误，请你找到，并加以改正。
( )1. He finds his ID card on the dress.
( )2. There are some pencil in the case.
( )3. Is the video cassettes behind the computer?
( )4. My hat is in the chair.
( )5. There isn't any radios in the shop.
商业票据不能作为信用货币的形式。
