随着肺量测定法用于气道阻塞的诊断测验，其阳(阴)性预测值均不够有效？

As spirometry is used as a diagnostic test to verify obstruction (instead of excluding it), these predictive values are insufficient.? Br.

youdao

500只股票中仅有5只收于阳线，零售商梅西百货公司凭借其强劲的公司收益上升5.9%。

Only five of the 500 stocks ended positively, with retailer Macy's advancing 5.9% on strong corporate earnings.

youdao

今年5月，九阳紫砂煲曾被曝光由普通陶土制成，并以工业制剂增色，当时其产品被全部撤架。

The cooker was claimed to be made of common clay and colored with industrial materials in May, when all the products were taken off the shelves.

youdao