1151智能压力变送器的微处理控制()转换的操作,完成自诊断及实现数字通信。
A.A/D和I/0
B.D/A和I/0
C.A/D
D.D/A
参考答案:C, D
— Are you going to the ball tonight? —It’s too late now. How I wish ___ about it earlier.
A.I’ll know
B.I’ve known
C.I know
D.I’d known
—Who is it?
— ______. I took this photo when I was 4.[ ]
A. I
B. Me
C. Mine
D. Myself