How do you say 15,858?

A． Fifteen thousands, eight hundred and fifty-eight

B． Fifteen thousand, eight hundreds and fifty eight.

C． Fifteen thousand, eight hundred and fifty-eight

D． Fifteen thousand and eight hundred and fifty-eight.

按实物测绘机床电气设备控制线路图时，应先绘制（）。

A、电气原理图

B、框图

C、接线图草图

D、位置图