第四十八条 纳税人适用退（免）税、免征增值税的出口业务，应当按照规定期限申报；逾期未申报的，按照视同向境内销售的规定缴纳增值税。
if(h->ref--)return;，这一点在爱思助手下载最新版本中也有详细论述
For implementers, BYOB adds significant complexity. The stream must track pending BYOB requests, handle partial fills, manage buffer detachment correctly, and coordinate between the BYOB reader and the underlying source. The Web Platform Tests for readable byte streams include dedicated test files just for BYOB edge cases: detached buffers, bad views, response-after-enqueue ordering, and more.，更多细节参见旺商聊官方下载
tool does a better job.。WPS下载最新地址对此有专业解读