问题 问答题 简答题

硅石质量对硅铁生产有什么影响?

答案

参考答案:

⑴、硅石粒度太大,反应速度减慢⑵、硅石粒度太小,料面透气性恶化电极不易深插⑶、硅石SiO2含量低,则硅铁质量差,渣量大硅石消耗量大⑷、硅石热稳定性差,影响炉料透气性总之,硅石质量不好,则炉况不稳,产量低,质量差,单耗高

单项选择题
完形填空

III.语法填空(共10题;每小题1.5分,满分15分)

阅读下面短文,按照句子结构的语法性和上下文连贯的要求,在标号为31—40的空格处填入一个适当的词或使用括号中词语的正确形式填空。

Tyler was born infected with HIV; his mother was infected. When he was 5, he had a tube surgically (adv. 如外科手术般地) inserted in a vein in his chest. This tube was    31   (connect) to a pump, which he carried in a small backpack on his back.    32   times, he also needed extra oxygen to support his breathing.

Tyler was    33   (will) to give up one single moment of his childhood in spite of this deadly disease. Those    34   knew him wondered at his pure joy in being    35  (live)and the energy it gave him. Tyler’s mother often made jokes on him by telling him that he moved so fast that she needed to dress him in red. That was, when she looked through the window to check on him playing in the yard, she could quickly find him.

In the end, he grew quite ill and    36   (fortune), so did his HIV-infected mother. When    37   became clear that he wasn’t going to survive, Tyler’s mother talked to him about death. She comforted Tyler    38  telling him that she was    39   (die), too, and that she would be with him soon in heaven.

A few days before his death, Tyler singed me to his hospital bed and whispered, “I might die soon. I’m not   40   (scare). When I die, please dress me in red. Mom promised she was coming to heaven, too. I’ll be playing when she gets there, and I want to make sure that she can find me.”