搜题请搜索小程序“爱下问搜题”
问题 单项选择题

托线板也称为担子板，和线锤合在一起使用，板中间有标准线，附有线锤。它的用途是（）。

A．用于靠、吊检查墙面和柱面的垂直度

B．用于靠、吊检查墙面和柱面的水平度

C．用于靠、吊检查楼面的平整度

D．用于墙面和柱面抹灰刮面

答案

参考答案：A

完形填空

阅读下面材料，在空白处填入适当的内容或括号内单词的正确形式（不多于3个单词）

Have you heard of a student awarded master’s dgree? Of curs. But the following student is quite different. Because she is  小题1: blind and dead. She is  小题2: combination of disabilities that is one of the mot severe known to mankind. Mrs Michelle Smithdas 小题3: (enjoy) a special success when she was awarded a masters degree at teachers’ College, New York, in the spring of 2005.

She did it with a lot of help from a lot of friends and   小题4:  (volunteer). Michelle, who received her degree in education of blind and visually impaired (受损的)learners,   小题5:  （believe）to be the first to gain a graduate degree from a top, famous university. She is an instructor at the Helen Keller National Centre in Sands Poit, New York,  小题6:  she teaches Braille, vocabulary,sign language and   小题7:  communicatio skills to those who are deaf-blind like her. For five years, she was driven to and from New York City for her classes by Mrs Linda Stillman, who also served  小题8: her interpreter. During classes, Mrs Stillman would sit next ot Michelle and hold her hand, using the manual alphabet (also known as finger-spelling) to communicate.Michelle also participated fully in class, going on al field trips and  小题9: (ask) questions in class. Outside class, many of her friends and helpers helped her read text books and write research papers.

According to one professor at Teachers’ College, Michelle was  小题10: only a fine student but also an inspriration to us all. Michelle
查看答案
问答题 简答题

pH测定的基本原理是什么？常使用什么电极进行检测？
查看答案