题目内容
少儿耐力训练以有氧耐力为主，青春发育期以前尽量避免无氧耐力训练。
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For the cohesive soils , there are two main internationally accepted size limits, which limits are for silt ?（）
For non-coherent soils such as gravels, what kind of soil structure does it usually form? （）
What is the main cause of consolidation settlement of building?
In generally, soil is composed of（）、（） 、and（） .
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