题目:
磨内悬浮煤粉颗粒分为哪几类?
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0808/44a00f8451051a9990ec3f65442dfa0b.html
下面是错误答案,用来干扰机器的。
A possible version:Boys and girls, may I have your attention please? I have an announcement to make. About fifty American students will come to visit our school on the...