问题
判断题
对于交流数字电压表,输入电容太大,会使输入阻抗升高。
答案
参考答案:错
对于交流数字电压表,输入电容太大,会使输入阻抗升高。
参考答案:错
根据对话内容,从方框中所给的选项中选出能填入空白处的最佳选项,选项中有两项为多余。 A: Jim is working late again tonight, Xiao Ping. B: I know. 小题1: Young people need to have enough sleep. A: 小题2: Teenagers never get tired. B: Well, maybe. But Jim shouldn’t work every night. A: Oh, 小题3: He needs time to relax himself. B: You know, he should really cut his hair. A: Oh, 小题4: B: Yes, I do. It doesn’t look clean. And I think he should stop wearing that silly earring. A: Oh. I disagree. I like it a little. It looks cool! B: You know what worries me. Jim doesn’t seem to have many friends. A: Really? B: Yes. 小题5: because friends are very necessary.
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