问:我是新手,觉得钢笔工具很不好控制,有什么好的方法或者技巧呢?
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According to Figure 3, 1 yr after emergence, the greatest percent of the seedlings were from which of the tree species in Plot X and Plot Y, respectively?
A. red maple;red maple
B. red maple;white ash
C. white ash;red maple
D. white ash;white ash
工业毒物的危害程度在《职业性接触毒物危害程度分级》(GB5044-85)中下列不属于的有()
A. 极度危害
B. 高度危害
C. 中度危害
D. 重度危害
问: 用钢笔工具钩下一图像后,怎样抠到新建的文件中去?
问:请问photoshop6.0里缩小的图片如何保存?