题目内容：
关于承揽合同的说法正确的是（）
A.承揽合同应当采用书面形式
B.承揽人发现定作人提供的图纸不合理的，可以直接修改
C.承揽人在工作期间，应当接受定作人必要的监督检验
D.承揽人可以根据工作需要自行决定是否留存复制品或者技术资料
参考答案：
答案解析：
选择题：关于承揽合同的说法正确的是（）
- 题目分类：二级建造师
- 题目类型：选择题
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