Innovative的意思是______
A. strong and lasts a long time without breaking or becoming weaker.
B. new and original
durable 的意思是_____
A. strong and lasts a long time without breaking or becoming weaker.
B. involving or relating to the buying and selling of goods.
cooperation的意思是______
A. joint operation or action
B. involving or relating to the buying and selling of goods.
( )命令可以方便地查询指定两点之间的直线距离以及该直线与X轴的夹角。
A. 点坐标
B. 距离
C. 样条曲线
D. 直线
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