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【单选题】
当汽车在行驶中后桥出现连续的“嗷嗷”声响，车速加快声响也加大，滑行时稍有减弱，说明(A.
圆锥主从动齿啮合间隙过小
B.
圆锥主从动齿啮合间隙过大
C.
圆锥主从动齿啮合轮齿折断
D.
半轴花键损坏?)。
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【简答题】Compared to an operating lease, all other things being equal, over the term of a finance lease, A. The interest coverage ratio will decrease. B. The return on assets ratio will decrease. C. The asset ...
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【简答题】阅读理解。 All living things on the earth need other living things to live. Nothing lives alone. Most animals must live in a group, and even a plant grows close together with others of the same kind. Somet...
【简答题】阅读理解。 All living things on the earth need other living things to live. Nothing lives alone. Most animals must live in a group, and even a plant grows close together with others of the same kind. Somet...
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【简答题】三变包含：( )
【单选题】下面关于活性污泥的叙述中错误的是( )。
A.
活性污泥法系统实质上是自然界水体自净的人工模型,是经人工强化的模型
B.
活性污泥是活性污泥处理体系中的主体作用物质,在活性污泥中栖息着具有强大生命力的微生物种群
C.
活性污泥反应进行的结果是废水中的有机污染物和无机物得到降解、去除,废水得以净化,微生物的繁衍增殖使得活性污泥本身也得到增长
D.
活性污泥由四部分物质组成:具有代谢功能活性的微生物群体(Ma);微生物(主要是细菌)内源代谢、自身氧化的残留物(Me);由原污水挟入的难为细菌降解的惰性有机物质(Mi);由污水挟入的无机物质(Mii)
【简答题】A lovely little girl was holding two apples with both hands.Her mum came in and__ 1 __asked her little daughter with a smile , “My sweetie , could you give your mum one of your two apples ? ” The girl...
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