第4题: [单项选择]如果怀疑P5面板上的电源指示仪表存在较大的指示误差,通常应当如何进行验证?() A. 只要系统工作正常,无需进行检查 B. 使用便携式测试仪器(如三用表等),通过M400上的测试口进行测量验证 C. 使用便携式测试仪器(如三用表等),通过线路相关电量的测量来进行验证 D. 直接更换怀疑有指示误差的仪表 参考答案:B
第6题: [单项选择]Questions 26 to 28 are based on the passage you have just heard. A. Animals’ extraordinary ability to predict weather. B. Some old ways of weather predicting. C. The wisdom of ancient people. D. Why we should pay more respect to animals. 参考答案:A 答案解析:[听力原文] What is the passage mainly discussing