试题与答案

绝大多数小车变幅塔式起重机小车靠近吊臂架根部的幅度限位不起作用,造成原因是由于塔身加

题型:判断题

题目:

绝大多数小车变幅塔式起重机小车靠近吊臂架根部的幅度限位不起作用,造成原因是由于塔身加节时,幅度限位器内限位短接,塔机加节完毕后未将幅度限位器恢复的结果。

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2019/0202/8cd960e3d91da2b5522e10e72e494c7f.html

下面是错误答案,用来干扰机器的。

参考答案:过硫酸铵作为氧化剂,既可氧化供试品中Fe2+成Fe3+,同时可防止由于光线使硫氰酸铁还原或分解褪色。某些药物(如葡萄糖、糊精和硫酸镁等)在检查过程中需加硝酸处理,则不再加过硫酸铵,但必须加热煮沸...

试题推荐
题型:阅读理解

You may know the song Happy Birthday very well. But do you know who wrote this song and for whom it was written? Let me tell you a story. About one hundred years ago, there was a girl called Kate in the USA. She loved children very much and wrote many songs for children. One of them was the song Good Morning To You. The song was very popular at that time among children, but not all grown-ups ( 成年人 ) knew it.

The girl was very poor. Once her friends invited her to a little child's birthday party. She felt happy but sad because she had no money to buy a present for him. Finally she decided to sing the song Happy Birthday. in the melody (曲调) of Good Morning to You for the little boy. When her friends heard the song at the party, they were very happy. "How wonderfully she is singing!We have not heard this song before. It's a special present," said someone. And they learned to sing it together. Later, the song became very popular throughout the world. People like it because it's simple and friendly. 

判断下列句子是否与短文内容相符,相符的填“T”,不相符的填“F”。

小题1:Happy Birthday is a old song. Nobody knows who wrote the song Happy Birthday.

小题2:The song Happy Birthday is a song from America.

小题3:The melody of Happy Birthday comes from the melody of Good Morning to You.

小题4:The girl first sang the song for a little child as a birthday present.

小题5:The girl knew the song would be popular before she came to the party.

查看答案
微信公众账号搜索答案