"Using firm contracts in uncertain situations carries significant commercial risks," says Albert Sanchez-Graells, a professor at the University of Bristol Law School who has been researching NHS contracts for more than 15 years.
Credit: Exoticase
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豆子是自家种的黄豆，清水里泡上一天，磨成豆浆，过滤后倒进锅中烧火煮沸。等豆浆翻腾几次，加入黔北人家都有的酸汤水，豆浆就会渐渐凝固成一团团的嫩豆腐，也就是豆花。这一步有点神奇，黔北人叫做“酸汤点豆腐”。但是豆花并不能做灰豆腐，得舀进豆腐箱中压紧压实，等上一段时间，豆花变成方正紧实的老豆腐，就可以做灰豆腐了。
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