购货合同、材料请购单是不能用来证明经济业务实际上发生或完成的文件和单据，所以不能作为记账凭证。（）
参考答案：错
---Does Tom do his new job well?
---______ his old job. How stupid! I think there is no hope for him.
A．No better than
B．Not better than
C．Not so well as
D．No as well as
根据我国《刑事诉讼法》的规定，拘传持续时间最长不得超过（）。
A.6小时
B.12小时
C.24小时
D.48小时
