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【单选题】
在PhotoShop中,关于图层的描述不正确的是A.
图层中最下面的一层是背景层
B.
在一个图层修改时不会影响其它图层
C.
背景层是唯一的,不能改变上下关系
D.
背景层和其它层一样,可以有透明部分
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【简答题】We are all busy talking about and using the Internet but how many of us know the history of the Internet? Many people are surprised when they find that the Internet was set up in the 1960s. At that ti...
【简答题】We are all busy taking about and using the Internet. But how many of us know the history of the Internet? Many people are surprised when they find that the Internet was set up in the 1960s. At that ti...
【单选题】Multipurpose Internet Mail Extension (MIME)is a(76)document messaging standard in the Internet environment. With MIME, users can send(77)E-mail messages that include audio, video, graphices, and text ...
A.
complete
B.
compound
C.
simple
D.
efficient
【简答题】Internet是指(__);而internet是指(__)。
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