题目内容：
变更劳动合同应当采用书面形式，否则劳动合同变更无效。
A.正确
B.错误
参考答案：
选择题：变更劳动合同应当采用书面形式，否则劳动合同变更无效。
- 题目分类：慕课
- 题目类型：选择题
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