谢谢,但答案好像有些是错的JÒX
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65、水泥砼抗折强度测值计算正确的是(B、D)。JÒX
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JÒX
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A 、取3个测值的算术平均值JÒX
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JÒX
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B、一组测值中有一个测值超过中间值10%时,应取中间值JÒX
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JÒX
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C、一组测值中有一个测值超过中间值10%时,取另外两测值的平均值JÒX
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JÒX
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D、一组测值中有两个测值超过中间值10%时,此组试件应作废JÒX
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JÒX
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应该选A吧JÒX
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63、关于水泥胶砂强度抗压试验结果应符合下列要求(B、C)。JÒX
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JÒX
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A 、6个试件的抗压强度结果剔除最大值和最小值JÒX
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JÒX
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B、不足6个时应取平均值 C、不足4个时应重做实验JÒX
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JÒX
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D、偏差值应不大于平均值的10%JÒX
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JÒX
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应该选B吧JÒX
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[em04]
JÒX
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