长期居住在外地的，办理异地登记手续后，在所选异地定点医院住院的，无需负担转诊费用。
参考答案：对
This book is specially intended _____ those who want to improve their writing. [ ]
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设A是n阶矩阵，证明： (Ⅰ) r(A)=1的充分必要条件是存在行阶非零列向量α，β，使得A=αβT； (Ⅱ) r(A)=1且tr(A)≠0，证明A可相似对角化．
