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1.5 ��(sh��)�(y��n)�ҹ��r

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2. ��ˮ̎��S��(sh��)�(y��n)��Ҏ(gu��)��Ҫ��

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3. �O(ji��n)�y��T�ڌ�(sh��)�(y��n)��Ҏ(gu��)��摪(y��ng)��Ĺ��

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