怎样用英文介绍冰箱
题目
怎样用英文介绍冰箱
答案
A refrigerator (often called a "fridge" for short) is a cooling appliance comprising a thermally insulated compartment and a mechanism to transfer heat from it to the external environment,cooling the contents to a temperature below ambient.Refrigerators are extensively used to store foods which deteriorate at ambient temperatures; spoilage due to bacterial growth and other processes is much slower at low temperatures.Devices described as "refrigerators" maintain a temperature a few degrees above the freezing point of water; similar devices which maintain temperatures below the freezing point of water are called "freezers".The refrigerator is a relatively modern invention amongst kitchen appliances.It replaced the common icebox which had been a household item for almost a century and a half prior,and is sometimes still called by the original name "icebox".
举一反三
已知函数f(x)=x,g(x)=alnx,a∈R.若曲线y=f(x)与曲线y=g(x)相交,且在交点处有相同的切线,求a的值和该切线方程.
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