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【简答题】
简述活性污泥的驯化过程。
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举一反三
【单选题】下列各项中，关于钢筋连接的基本规定错误的说法是()。
A.
钢筋的连接可分为绑扎连接、焊接和机械连接三种
B.
在任何情况下，纵向受拉钢筋绑扎搭接接头的搭设长度不应小于300mm，纵向受压钢筋的搭接长度不应小于200mm
C.
钢筋机械连接有钢筋套筒挤压连接、钢筋锥螺纹套筒连接、钢筋镦粗直螺纹套筒连接、钢筋滚压直螺纹套筒连接
D.
当受拉钢筋的直径d>22mm及受压钢筋的直径d>25mm时，不宜采用绑扎搭接接头
【简答题】There are many kinds of ants in the world that always live in companies. They are the most hardworking creatures and most of them make their nests under ground. The small black ants that we see runnin...
【简答题】钢筋的连接可分为绑扎搭接、和焊接
【单选题】--What do you ________ the people in China? -- They are friendly and hardworking.
A.
think up
B.
think about
C.
think over
D.
think of
【单选题】The ants, ________, have their times for play.
A.
hardworking as are they
B.
as they are hardworking
C.
hardworking despite they are
D.
hardworking as they are
【简答题】钢筋的连接可分为绑搭接连接、 _______和焊接连接。
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