皮皮学，免费搜题
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【单选题】
.通常饭店经相应星级评定机构评定后,星级标志有效期是(A.
.一年
B.
.三年
C.
.五年
D.
.八年
拍照语音搜题，微信中搜索"皮皮学"使用
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知识点：
皮皮学刷刷变学霸
举一反三
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A.
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B.
白喉、喉头水肿
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