缺少数字，视为零 & 缺少颜色堆栈操作。& 未定义控制序列

Question

我从上周末开始就一直在尝试解决这些问题。正如标题所示，我遇到了很多问题。有什么建议吗？

• 缺失数字，视为零。
• 缺少颜色堆栈操作
• 未定义控制序列
• 没有参考

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            Author
            
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            Supervisors
            
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                Dr. sco}
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                NDALE\\
                PH.D. RESEARCH PROPOSAL\\ [.1in]
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            A thesis submitted in partial fulfillment of the requirements\\
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            in the Graduate School\\
            Soale
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