炽灼至恒重的第二次称重应在继续炽灼后等待A.15minB.20minC.30minD.45minE.60minABCDE

发布时间:2021-01-10 23:40:04

1.[]炽灼至恒重的第二次称重应在继续炽灼后等待A.15min B.20min C.30min D.45minE.60minABCDE

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参考答案:C
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