【单选题】【消耗次数：1】
硬质支气管镜使用率小于4%是哪年开始的
①
1897
②
1968
③
1989
④
1999
⑤
21世纪初
参考答案：
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【单选题】
哪个是石大在线官方微信？
①
<imgdata-url="doc/a@8CE0393037E3C3D943041E145EEB4761.jpg"data-preview_url_ueditor="doc/a@8CE0393037E3C3D943041E145EEB4761.jpg"src="http://121.251.253.213/doc/a@8CE0393037E3C3D943041E145EEB4761.jpg/download?time=636154229957298238&token=C9C2E01C18DF968BF18A561EE6D28018&filename=jpg"/>
②
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③
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④
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