宫商角羽打一成语：五音不全。“宫、商、角、徵、羽”是我国五声音阶中五个不同音的名称，谜题少了一个“徵”，即为谜底五音不全。
I have found that user can associate help with his application using Help Viewer. Users typically launch Help Viewer by choosing the开发者_高级运维 application help item from the Help menu, or by typi
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