A/D转换器的功用是（）
A、将二进制数转换为十进制数
B、将十进制数转换为二进制数
C、将数字量转换为模拟量
D、将模拟量转换为数字量
参考答案：D
—Did he tell you all about the accident?
—No,I got the feeling that he was something from us.
A．keeping off
B．keeping back
C．keeping out
D．keeping up
班主任赞美表扬艺术有几种方法？
