diff --git a/题库0.3/Problems.json b/题库0.3/Problems.json
index e82e5c2c..ad8ff535 100644
--- a/题库0.3/Problems.json
+++ b/题库0.3/Problems.json
@@ -267959,7 +267959,7 @@
     },
     "009994": {
         "id": "009994",
-        "content": "若平面向量$\\overrightarrow a,\\overrightarrow b,\\overrightarrow c$满足$|\\overrightarrow a|=|\\overrightarrow b|=|\\overrightarrow c|=\\lambda$, 且$\\overrightarrow a\\cdot \\overrightarrow b=0$, $\\overrightarrow a\\cdot \\overrightarrow c=2$, $\\overleftrightarrow b\\cdot \\overrightarrow c=1$, 则$\\lambda=$\\blank{50}.",
+        "content": "若平面向量$\\overrightarrow a,\\overrightarrow b,\\overrightarrow c$满足$|\\overrightarrow a|=|\\overrightarrow b|=|\\overrightarrow c|=\\lambda$, 且$\\overrightarrow a\\cdot \\overrightarrow b=0$, $\\overrightarrow a\\cdot \\overrightarrow c=2$, $\\overrightarrow b\\cdot \\overrightarrow c=1$, 则$\\lambda=$\\blank{50}.",
         "objs": [],
         "tags": [
             "第五单元"