皮皮学，免费搜题
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搜题
【单选题】
Sam gets up at six in the morning. He has breakfast at home. He goes to school at seven. He has lunch at school, but on Sundays he has lunch at home with his family. He often has supper at home. He doesn't watch TV in tile evening. He only watches TV on Saturday evening. He often does his homework after supper. He goes to bed at nice every day. Sam doesn't have his lunch at home on Sunday.A.
True.
B.
False.
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皮皮学刷刷变学霸
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【多选题】关于生态系统物质循环表述正确的是
A.
物质循环根据其范围、途径和周期不同，分为生态系统内小循环和生物地球化学大循环
B.
物质循环过程中，元素储存量大大超过结合在生命系统中的数量，并缓慢释放的，通常被称为储存库
C.
物质循环中元素储量较少、移动较快的称为交换库
D.
根据储存库和物质形态不同，生物地球化学循环可分为水循环、气体型循环和沉积型循环。
【简答题】物质循环可分为水循环、( )和沉积型循环三大类型。
【简答题】实践周文档补充提交。根据已给的框架补充完成学习内容。寒假请多实践。
【简答题】在主管人员的选聘过程中，首先有两条重要的原理需要遵循：(1)_______;(2)_______。
【单选题】粗集料经碱集料反应试验后,试件应无裂缝、酥裂、胶体外溢等现象,在规定的试验龄期膨胀率应小于( )。
A.
0. 05%
B.
0. 10%
C.
0. 20%
D.
0. 30%