全要素生产率是要素投入转化为产出的总体效率，决定着经济内涵型发展程度和潜在增长率高低，体现着经济发展的结构和质量。
for await (const chunks of source) {
。关于这个话题，safew官方下载提供了深入分析
The semantics around releasing locks with pending reads were also unclear for years. If you called read() but didn't await it, then called releaseLock(), what happened? The spec was recently clarified to cancel pending reads on lock release – but implementations varied, and code that relied on the previous unspecified behavior can break.
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。
const consumer1 = shared.pull();