单项选择题

按键盘中的_______键，可以将Photoshop软件关闭，甚至可以将计算机关闭。 A.
Ctrl+W B.
Alt+F4 C.
Ctrl+N D.
Shift+Ctrl+W

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单项选择题

A chained network with one long chain （）A.is more flexible than a dedicated network and more costly than a fully flexible network.B.is less flexible than a dedicated network and less costly than a fully flexible network.C.is less flexible than a dedicated network but more costly than a fully flexible network.D.is more flexible than a dedicated network and less costly than a fully flexible network.

多项选择题

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