If the decision by the Customs on the dispute over duty payment is not acceptable to the duty payer, the duty payer has the right to sue ______ the PeoPle’s Court within 15 days of receipt of the decision.

A．in
B．to
C．on
D．at

粗镗时，在工艺系统的（）允许的条件下，可选用较大的进给量。

A.硬度

B.抗振性

C.力学性能

D.物理化学性能

E.刚度

F.强度