【单选题】Don’t let ruin your holiday. A. bad experience B . a bad experience C. bad experienced D. a experience
【单选题】He is a success as a leader but he hasn't _______ in teaching. A. many experiences B. much experience C. an experience D. a lot experience
【单选题】在二维变换中,比例变换矩阵中( )会导致变换后的图形发生变形。
【单选题】关于Python程序中多行注释的说法中,不正确的是____。
【简答题】python中的# 用于 ,三引号常用于