题目

下列为几种用电器铭牌上的标称值，当用电器均正常工作时，电流最大的是（ ）A.“6V，10W” B.“6V，6W”C.“110V，60W” D.“220V，60W” 答案：【答案】A【解析】A.由P=UI可知，A中电流为：；故A项正确；B. 由P=UI可知，B中电流为：；故B项错误；C. 由P=UI可知，C中电流为：；故C项错误；D. 由P=UI可知，D中电流为：；故D项错误。请听下面一段材料,回答第1至4题. 1. What is the man going to do in the evening?A. Take an exam.B. Study.C. Look for a job.2. What exam will the man take?A. The entrance exam.  B. The mid-term exam.   C. The final exam.3. What does the man think of the coming exam?A. Easy.B. Harder than the last one.   C. Too difficult to pass.4. What does the man think of the present job?A. It is not the best one.          B. It's the best one in the world.C. It's the worst one in the world.