【单选题】【消耗次数：1】
水泥胶砂强度试验三条试体28天抗折强度分别为7.0MPa，9.0MPa，7.0MPa，则抗折强度试验结果为
①
7.0MPa
②
8.4MPa
③
7.9MPa
④
8.7MPa
参考答案：
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【判断题】
对一批牌号为Q235的钢筋进行抽检，钢板厚度为20mm，得到各试样的屈服强度检测值分别为：227.5MPa、220.3MPa、222.0MPa、225.8MPa、229.3MPa；钢筋拉断后伸长率分别为：21%、20%、23%、27%、31%。该批钢筋为带肋钢筋。（）
①
正确
②
错误
【单选题】
有湿空气的压力为0.106MPa，干空气分压为0.082MPa，若同温度下饱和水蒸气分压为0.062MPa，则此湿空气的相对湿度为 （ ）。
①
22.6%
②
38.7%
③
58.5%
④
75.6%
【单选题】
有湿空气的压力为0.106MPa，干空气分压为0.082MPa，若同温度下饱和水蒸气分压为0.062MPa，则此湿空气的相对湿度为 （ ）。
①
22.6%
②
38.7%
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58.5%
④
75.6%
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①
?has this city been
②
?this city has been
③
?was this city
④
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he realized
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delivery
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①
which
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①
advocate
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stare