测定粉煤灰烧失量,取1g试样置于瓷坩埚中,在()高温炉中灼烧()。A.900-1

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问题 测定粉煤灰烧失量,取1g试样置于瓷坩埚中,在()高温炉中灼烧()。A.900-1000℃,10-20minB.大于900℃,大于15minC.950-1000℃,15-20minD.1000-300℃,30min

选项 A.900-1000℃,10-20min
B.大于900℃,大于15min
C.950-1000℃,15-20min
D.1000-300℃,30min

答案 C

解析 测定粉煤灰烧失量方法(JTGE51-2009T0817),是取1g试样置于瓷坩埚中,在950-1000℃高温炉中灼烧15-20min。
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