对在岗接触粉尘作业的工人，岩石掘进工种每4—5年拍片检查1次；混合工种每2—3年拍片检查1次；纯采煤工种每4—5年拍片检查1次
参考答案：错
When the dispute over duty payment arises between the duty payer and the Customs, the duty payer should first pay the duty and then, within （） of the issuance of the duty memo, apply to the Customs in writing for a reconsideration of the case.
A. 10 days
B. 20 days
C. 30 days
D. one year
死套
