货物发生海上保险事故后，认为实际全损已经不可避免，或者为避免发生实际全损所需支付的费用与继续将货物运抵目的地的费用之和超过保险价值的，为推定全损。
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Scientists racing to tackle plastic pollution have created a surprising new contender: a biodegradable packaging film made partly from milk protein. Researchers at Flinders University blended calcium caseinate with starch and natural nanoclay to form a thin, durable material designed to mimic everyday plastic. In soil tests, the film fully broke down in about 13 weeks, pointing to a realistic alternative for single-use food packaging.，这一点在体育直播中也有详细论述
Фото: Алексей Даничев / РИА Новости