[audioFiles]audio_ezfm_0200(20103)[/audioFiles]

游客2024-10-25 15

问题

选项

答案                               Several Ways To Keep Food Cool
   Bacteria can make foods go bad. / This is true of cooked foods as well as fresh foods. / The problem is
especially dangerous when the air around food is warm./High heat kills bacteria./But warm，wet conditions help bacteria grow./
   So，the best way to protect food is to keep it in a Cool place./There are several ways to keep food call without the need for electricity./Some refrigerators，for example, are powered by gasoline motors./
   There are 1ess costly ways than refrigeration to keep food cool./An ice box is a simple device./It is made mostly of wood./The inside walls are covered with metal./A big  piece of ice  is  placed in the bottom./Millions of  homes had ice boxes/until refrigerators became common in the 1940s./
An ice box is  kept food cool spoiling for several days/if the outside temperature is not too warn./If the box is kept out of sunlight，the ice Will 1astlonger./
   Probably the best method to keep food C001 without electricity/is a device called the evaporative cooler./Evaporation is the natural change of water from liquid to gas/as the water mixes back into the atmosphere./An evaporative cooler is．easy to make，And it does not need tee./

解析

转载请注明原文地址:http://tihaiku.com/zcyy/3817222.html

相关试题推荐

随机试题

最新回复(0)

[audioFiles]audio_ezfm_0200(20103)[/audioFiles]

[audioFiles]audio_ezfm_0095(20103)[/audioFiles]Thereareveryoftenstrongo

[audioFiles]audio_ezfm_0164(20103)[/audioFiles]Marriagehasbeenanimport