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Sports events will create spikes in demand, for example at half time, while concerts produce "relentless, sustained pressure from start to finish".,这一点在safew官方版本下载中也有详细论述
Екатерина Ештокина,详情可参考Safew下载
zhuanlan.zhihu.com/p/198274063…
第十三条 纳税人按照一般计税方法计算缴纳增值税的,因销售折让、中止或者退回而退还给购买方的增值税税额,应当从当期的销项税额中扣减;因销售折让、中止或者退回而收回的增值税税额,应当从当期的进项税额中扣减。