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食品中最大的危害源是微生物污染和食品添加剂使用。()

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Such crashes are the second-leading cause of death for migrating birds, after habitat(栖息地loss, with an estimated number of death ranging up to a billion a year.

油炸食品的安全问题主要是由于油的反复使用导致脂肪酸的氧化，与油的温度无关。()

小作坊加工的选址不得设在易受到污染的区域，建筑周围不得有粉尘、有害气体、放射性物质和其他扩散性污染物。()

The United States Green Building Council, a nonprofit industry group that encourages the creation of environmentally conscious buildings, will introduce a bird-safety credit this fall as part of its environmental certification process.