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【简答题】
Mrs. Simpson is talking with a nurse at the registration office. Listen to the conversation and answer the following questions. Task 4.mp3: 1.Which department does Mrs. Simpson want to register with? 2.What was the reason for her last admission? 3.What is her insurance card number? 4. Which doctor does Mrs. Simpson want to visit? 5. Where is the waiting room?
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【简答题】图示运算电路中,设A 1 、A 2 为理想运算放大器。 , 。当输出电压 时,问电位器应调至使 =____kΩ。
【简答题】图示运算电路中,设A1、A2为理想运算放大器。已知输入电流 , 。 i1为A1最左边的输入电流,i3为A2左上角的输入电流。A1和A2的反馈电阻(跨接电阻)分别为1千欧和2千欧;A1和A2之间的连接电阻为1千欧。 填空: 当 时,输出电压 = ( )V 。