【单选题】【消耗次数：1】
关于维生素<img class="kfformula" src="20200424/1587719873847609.png" data-latex="{K}_{1}" width="39" height="26"/>的描述，下列说法错误的是（ ）。
①
注射后1~2h起效，3~6h止血效应明显，12~24h后<img class="kfformula" src="20200424/1587719873825079.png" data-latex="PT" width="44" height="27"/>恢复正常
②
维生素<img class="kfformula" src="20200424/1587719873963754.png" data-latex="{K}_{1}" width="39" height="26"/>主要在胃内吸收
③
维生素<img class="kfformula" src="20200424/1587719873577601.png" data-latex="{K}_{1}" width="39" height="27"/>为促凝血因子合成药
④
维生素<img class="kfformula" src="20200424/1587719873539508.png" data-latex="{K}_{1}" width="39" height="27"/>缺乏可引起出血倾向和凝血酶时间（<img class="kfformula" src="20200424/1587720020548019.png" data-latex="PT" width="42" height="27"/>）延长
⑤
有镇痛作用
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