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【单选题】
下列关于背景图层的描述那个是正确的( )A.
在图层调板上背景是不能上下移动的，只能是最下面一层
B.
背景层不能转换为其他类型额图层
C.
背景层可以设置图层蒙版
D.
背景层不可以执行滤镜效果
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皮皮学刷刷变学霸
举一反三
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A.
4
B.
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C.
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D.
1
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A.
am
B.
was
C.
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D.
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A.
传统营销渠道系统
B.
垂直营销渠道系统
C.
水平营销渠道系统
D.
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