选框工具:快捷键：M 1、选框工具共有4种包括【矩形选框工具】、【椭圆选框工具】、 【单行选框工具】和【单列选框工具】。它们的功能十分相似，但也有各自不同的特长。 矩形选框工具 使用【矩形选框工具】可以方便的在图像中制作出长宽随意的矩形选区。(Box selection tools: shortcut keys: M 1, 4 box selection tools include a rectangular box selection tool, an elliptical box selection tool, a single box selection tool, and a single box box selection tool. Their functions are very similar, but they also have their own different specialties. The rectangle marquee tool uses the rectangle marquee tool, which makes it easy to create long and wide rectangular selection in the image.)