判断题

Basically, it will be very inconvenient for any American who doesn’t have a car. Unlike most Chinese people now, who prefer to travel in the high-speed train, Mr. Huang says that American people prefer airplanes for their long-distance travels.______

答案：正确

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单项选择题

利用析取范式，可以判断一个公式是否永真或永假，且对于任意公式都存在唯一一个与之等价的主析取范式。（）

Python中字符串、元组是可变对象。
正确
错误

答案：错误