题目

某电动机的额定电压为220V，其线圈电阻为1Ω正常工作电流为3A，则其正常工作1min所做的机械功为J。 答案：【1】39060用所给单词的适当形式填空，使短文完整正确。（每个单词限用一次．每空只填一次）Have you ever picked strawberries yourself? The sweet fruit looks nice, but light pressure can make them out of shape, so you have to be very【1】when picking them. Nowadays, there 【2】 many young people who are just like strawberries. They【3】break down when they face difficulties. There is a name for them strawberry kids.Why are many children so easy to break down? Many students are the only child in their family. Their parents do almost everything for【4】in their daily life. They hardly ever get criticized（被批评）at home and always feel good about themselves. If these students are criticized strictly by teachers. They feel upset and begin to doubt their own【5】. And schools? Many schools care more about【6】grades instead of developing their personality. As a result, students get satisfying grades【7】 they are not mentally（精神上地）strong enough.Young people should learn how to make themselves mentally strong. An expert said, "Whenever you are in trouble, don’t ask for help too quickly. You should try to【8】with problems first by yourself. Take an active part in sports and social activities. That can help you become mentally strong."Growing up is not just a happy process, but 【9】go along. The most important thing is to face the pains【10】and learn from them.