看图选词填空。Wordlist:boy,girl,teacher1. I ama

磨制可磨性差的原煤要提高制粉出力，就必须提高磨煤机的入口温度。

Passage Three

According to the talk, which of the terms are different from each other

A．Written Arabic and pan-Arabic.

B．Classical Arabic and written Arabic.

C．Modem Arabic and written Arabic

D．Modem Arabic and colloquial Arabic.

产品技术的提升需要以基础知识作为后盾。

计轴系统STEU板LED 5亮黄灯表示：区段处于（）状态。