题目内容：
关于类型转换，下列说法错误的是（）。
A.布尔型不参加数据转换
B.转换过程中可能出现数据溢出
C.浮点数到整数的转换是通过舍弃小数得到的
D.子类对象变量不可以直接赋值给父类变量
参考答案：
选择题：关于类型转换，下列说法错误的是（）。
- 题目分类：中国大学MOOC慕课
- 题目类型：选择题
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