单项选择题
集装箱有()A、冷藏保温式B、敞顶式C、平板式D、无侧壁式
单项选择题集装箱有()
产业系统是人类与地表长期交互作用的产物( )The industrial system results fro...
判断题产业系统是人类与地表长期交互作用的产物( )The industrial system results from the long-term interaction between human beings and the earth"s surface( )
a=["a","b","c"],删除并返回第3个元素的语句是:
未知题型a=["a","b","c"],删除并返回第3个元素的语句是: