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问题描述：

[单选] 三维对齐命令Align，最多可以允许用户选择几个对应点:（）
A．3 B．4 C．2 D．1
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在夏令营的严重儿童住院症状是由于摄入了含有肉毒杆菌毒素的食物。下列哪一项徵状或症状符合肉毒杆菌中毒的诊断？Severe children at a summer camp were hospitalized symptoms through to be due to ingestion of food containing botulinum toxin． Which one of the following signs or symptoms is consistent with the diagnosis of botulinum poisoning？
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吸入途径的理想生物利用度是多少？What is the desired bioavailability in inhalation route？
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