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Forgetting releaseLock() permanently breaks the stream. The locked property tells you that a stream is locked, but not why, by whom, or whether the lock is even still usable. Piping internally acquires locks, making streams unusable during pipe operations in ways that aren't obvious.
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评审机制与时间线截稿日期:2026 年 2 月 22 日 23:59
第四十七条 纳税人出口货物或者跨境销售服务、无形资产(以下统称出口业务),依照增值税法第三十三条的规定申报办理退(免)税的,按照国务院规定的出口退税率,通过免抵退税办法或者免退税办法计算退(免)税额,经税务机关审核通过后,办理退(免)税。