问题
问答题 简答题
选用电力系统时应考虑哪几种情况？
答案
参考答案：
（1）电缆的额定电压，应等于或大于电网的额定电压；
（2）按长期允许载荷量选择电缆时，要考虑敷设方法，土壤温度，电缆并列条数及周围环境等因素；
（3）电缆敷设方式：直埋应选用铠装电缆，电缆沟敷设的可选用无铠装电缆；
（4）考虑电缆的敷设环境。
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选用电力系统时应考虑哪几种情况？
参考答案：
（1）电缆的额定电压，应等于或大于电网的额定电压；
（2）按长期允许载荷量选择电缆时，要考虑敷设方法，土壤温度，电缆并列条数及周围环境等因素；
（3）电缆敷设方式：直埋应选用铠装电缆，电缆沟敷设的可选用无铠装电缆；
（4）考虑电缆的敷设环境。
Have you heard of the term “etiquette” And do you know that etiquette is not only a useful word 1 very useful to understand? Etiquette is not the same in every culture 2 in every situation. For example, standing very close to the person you are talking with is quite common in some Asian countries. However; if you do this in Europe, some 3 people might feel 4.Even in China, we all know that etiquette is not the same in all situations. Perhaps we think that talking loudly in our own homes is fine, but there are other places where talking loudly is 5 .For example ,most people would agree that talking loudly in a library, a museum, or a movie theater is 6 .Even if you are with your friends, it is better to keep your voice 7 in public places. In fact, we should also 8 not to cough or sneeze loudly in public. If we see someone 9 the rules of etiquette, we may politely give them some suggestions. Perhaps one of the most polite ways 10 ask someone, Would you mind doing this or Would you mind not doing that. For example, if someone cuts 11 you in a line, you could ask them, Sorry, would you mind 12 the line? If someone is smoking on the bus you could ask, Excuse me, could you please 13 that cigarette? People don’t usually like 14 , so we have to be careful how we do this. Although rules of etiquette can often be different, some rules are the same almost everywhere in the world! For example, 15 is almost never allowed. If you see someone you know doing this, you can ask them, Would you mind picking it up?
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