| Why does cream go bad faster than butter Some
researchers think they found the answer, and it comes down to the structure of
the food,not its chemical composition--a finding that could help rid some
processed foods of chemical preservatives. Cream and butter contain pretty much the same substances, so why cream should sour much faster has been a mystery. Both are emulsions--tiny globules (小球) of one liquid evenly distributed throughout another. The difference lies in what’s in the globules and what’s in the surrounding liquid, says Brocklehurst, who led the investigation. In cream, fatty globules drift about in a sea of water. In butter, globules of a watery solution are locked away in a sea of fat. The bacteria which make the food go bad prefer to live in the watery colonies of the mixture. "This means that in cream, the ba A. tiny globules B. watery regions C. bacteria communities D. little compartments [单选题]通过剪贴板在Windows应用程序间共享数
据可选择()菜单中的命令来实现.
A.A:文件 B.B:编辑 C.C:格式 D.D:工具 [判断题]CRH380B型动车组牵引传动系统采用4动4拖的动力配置,全列由3个牵引单元组成。
A.正确 B.错误 [多选题]电压互感器励磁电流成倍偏大时，可能是（____）。
A. 匝间绝缘损坏 B. 铁芯片间短路 C. 铁芯松动 D. 二次绝缘几乎到零 [单项选择]与静态投资回收期计算无关的量是：（）。
A. 现金流入 B. 现金流出 C. 净现金流量 D. 基准收益率 [单选题]减脂去肥者最宜饮( )。
A.红茶 B.花茶 C.乌龙茶和普洱茶 D.绿茶和白茶 [多选题] 发生有焰燃烧必须具备的条件是（ ）。
A.可燃物 B.氧化剂 C.温度 D.未受抑制的链式反应 [单项选择]腓神经（）
A. 进行性多灶性白质脑病 B. 进行性风疹性全脑炎 C. 亚急性硬化性全脑炎 D. Gerstmann-Straussler-Scheinker综合征 E. 单纯疱疹病毒性脑炎 [单选题]监控系统远动装置异常属于()缺陷
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[简答题]赵武灵王北略中山之地，至房子，遂至代，北至无穷，西至河，登黄华之上。与肥义谋胡服骑射以教百姓，曰："愚者所笑，贤者察焉。虽驱世以笑我，胡地、中山，吾必有之！"遂胡服——节选自《赵武灵王胡服骑射》赵武灵王为什么要"胡服骑射"？
[判断题] 配电设备的盘柜检修、查线、试验、定值修改输入等工作，宜在盘柜的前后分别悬挂“在此工作！”标示牌。
A.正确 B.错误 我来回答: 提交
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