按材料分，轧辊有哪几种？_爱下问搜题

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问题问答题简答题

按材料分，轧辊有哪几种？

答案

参考答案：

按材料分，轧辊有锻钢的、铸钢的和铸铁的三种。

单项选择题 A1/A2型题

神经性呕吐最具有特征的临床表现是（）

A.体重明显减轻

B.呕吐随时随地出现

C.患者有害怕发胖和减轻体重的想法

D.伴有癔症症状

E.无导致呕吐的神经和躯体症状

完形填空

Robby was 11 years old when his mother dropped him off for his first piano lesson. I 36 that students begin at an earlier age, which I explained to Robby, but Robby said that it had been his mother’s 37 to hear him play the piano. So I took him as a student.
Hard 38 Robby tried, he lacked the basic sense of music. However, he persisted, and at the end of each weekly 39 , he always said, “My mom’s going to hear me play some day.” But it seemed 40 . He just did not have any gift for music.
I only knew his mother from a distance as she dropped Robby 41 or waited in her old car to 42 him up. She always 43 and smiled but never visited my class. Then one day Robby 44 coming to our lessons. He telephoned me and said his mother was 45 .
Several weeks later I was preparing my students for the upcoming recital(独奏会) 46 Robby came and asked me if he could be in the recital. “Miss Hondorf ... I’ve just got to 47 !” he insisted. I agreed.
The night for the recital came. The high school gymnasium was 48 with parents, friends and relatives. The recital went off well. Finally Robby came up on stage. I was 49 when he announced that he had chosen Mozart’s Concerto(协奏曲) No. 21 in C Major. I was not 50 what I heard next. His fingers were light on the keys. He played so 51 that everyone 52 to applaud him. In tears I ran up on 53 . “Oh, Robby! How did you do it?”
“Well, Miss Hondorf ... I kept on 54 at home. Remember I told you my mom was sick? Well, _55 she had cancer and passed away this morning. And well ... she was born deaf, so tonight was the first time she ever heard me play ...”

C．disappointed

A．pleased with	B．interested in
C．eager for	D．prepared for

C．differently