【单选题】Teaching cases mainly include teaching record, instructional design and _____________.
【单选题】Teaching materials should agree with or reflect the teaching ____, aims, objectives and teaching methods.
【单选题】下列关于聚乙二醇作为薄膜衣包衣材料说法不正确的是
【单选题】使用内切圆半径绘制多边形时不需要确定( )