问题
判断题
蒸发加热器积存冷凝液,此时加热器内蒸汽压力高,有效传热面减少。
答案
参考答案:对
蒸发加热器积存冷凝液,此时加热器内蒸汽压力高,有效传热面减少。
参考答案:对
用方框中所给单词的适当形式填空,使短文通顺、正确、连贯(每个单词限用一次)。
Germs are the reason. They live on your feet and love dark, wet 小题2: like the insides of the sweaty shoes. They eat 小题3: skin cells and oils from your feet, and get rid of waste . So what can you do? It’s 小题4: to stop the smell completely, but if you cut down on sweat, you will cut down on the bad smell. Here are some things to try. 1.Bathe your feet every day. Dipping(浸泡) your feet into a tub of water is better than just 小题5: the shower water run past them. 2.Wear cotton socks ,because they take in sweat better. Put on a fresh pair 小题6: they get wet. 3.Never wear shoes made of plastic. Plastic and other artificial(人造的)materials don’t let your feet breathe. Don’t wear the same shoes every day, because 小题7: will allow germs to build up. Let your shoes dry out for a few days before 小题8: them again. Putting 小题9: out in the sun may also help kill the germs. Remember : As long as you keep your feet 小题10: and dry, those germs will have to find lunch somewhere else. |