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【判断题】
创伤急救时到达现场后首先应该评估现场的安全性A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】给出如下代码: fname = input("请输入要打开的文件: ") fi = open(fname, "r") for line in fi.readlines(): print(line) fi.close() 以下选项中描述错误的是
A.
通过fi.readlines()方法将文件的全部内容读入一个字典fi
B.
用户输入文件路径，以文本文件方式读入文件内容并逐行打印
C.
通过fi.readlines()方法将文件的全部内容读入一个列表fi
D.
上述代码中fi.readlines()可以优化为fi
【单选题】Q: What is ‘ grand tour ’ now
A.
moderate cost.
B.
local sight-seeing is investigated by the tourist organization.
C.
people enjoy the first-rate comforts.
D.
everybody can enjoy the ‘grand tour’.
【单选题】What is ‘grand tour’ now?
A.
moderate cost.
B.
local sight-seeing is investigated by the tourist organization.
C.
people enjoy the first-rate comforts.
D.
everybody can enjoy the ‘grand tour'.
【单选题】After school, he _____________________ (worked as a clergyman of the English Church / continued studying and took a “grand tour” to Europe).
A.
worked as a clergyman of the English Church
B.
continued studying and took a “grand tour” to Europe
【简答题】已知电阻R为2KΩ,用叠加定理求下图中电压U时,只有恒流源单独作用时电压U'=( )V, 只有恒压源单独作用时电压U'’=( )V,因此电压U= ( )V
【简答题】已知电阻R为2KΩ,用叠加定理求下图中电压U(要求:画出计算过程中单电源作用的电路图)
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