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【单选题】
混凝土设计配合比确定后，尚应用该配合比进行不少于()混凝土的重复试验，每盘混凝土应至少成型一组试件，每组混凝土的抗压强度不应低于配制强度。A.
二盘
B.
三盘
C.
四盘
D.
五盘
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参考解析：
知识点：
皮皮学刷刷变学霸
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【单选题】Vancouver(温哥华) is a cosmopolitan(世界性的) city of stunning beauty. Set between the waters of the Strait of Georgia and the Coast Mountains, Vancouver is a place of tremendous physical beauty. Few other p...
A.
a city of great natural beauty and rich Asian culture
B.
a city lying among the Great Lakes
C.
the only city in North America that has a Chinatown
D.
the only city in North America that has natural beauty
【单选题】两个大样本均数比较的Z检验,|Z|=2.53,则统计结论是
A.
P<0.05< /div>
【单选题】两个大样本均数比较的Z检验, |Z|=1.98,则统计结论是
A.
P ＜0.05
B.
P ＜0.01
C.
P ＞0.05
D.
P =0.05
E.
P ＜0.005
【简答题】阅读理解。 Once an English doctor came back from China for Christmas holiday. He gave his mother some tea as a present. She told her friends about the present and asked them to come to a 'tea party'. When ...
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【简答题】“Green” is more than just a colour. It means that you should live to p 小题1: the environment—the water, the land and the air. You can be a green kid by following these steps. When you use l 小题2: of som...
【单选题】两个大样本均数比较的z检验,|z|=2.98,则结论是
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【单选题】两个大样本均数比较的Z检验,|Z|=2.53,则统计结论是
A.
P<0.05< /div>