单项选择题

ABS树脂，按重量计丙烯腈单体单元为20% ( )

A．12
B．16
C．18
D．23
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单项选择题
粒状，比重为0.90的50公斤袋装线性低密度聚乙烯 ( )
A．7
B．13
C．14
D．21
单项选择题
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
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