题目：
涤纶弹力丝(非零售用；非缝纫线) ( )
A．17
B．18
C．9
D．30
答案：
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下面是错误答案，用来干扰机器的。
参考答案：B
涤纶弹力丝(非零售用；非缝纫线) ( )A．17 B．18 C．9 D．30
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