搜题请搜索小程序“爱下问搜题”
问题 实验题

学校实验室里有一卷细漆包线，要求不拆散它，而测出它的长度，已知这卷漆包线的质量为m，请利用实验室的一把刻度尺和托盘天平，测出这卷线的长度。

答案

用刻度尺测量1m长的漆包线剪下，长用L1表示，用天平测出其质量m1，根据质量与长度成正比得：m：m1=L：L1，L为这卷线的总长度，可计算出L。

填空题

阅读短文，根据首字母提示，完成单词。

     English is difficult to learn because it is so different from our mother tongue(母语). Also, we don't have much chance to speak English with foreigners or hear English s___1____.

     So the first important thing for us to do, I think, is to p___2____ speaking English more both in and

out of class. In class I listen to the teacher carefully and t___3___ my best to answer the

teacher's questions in English. After class, I listen to the tapes and wonderful English songs. I often retell

the texts in my own words. I always work hard at English and n___4___ give up.

     Of course this is not enough. When I find something interesting, I wrote it down in English. At first, I

couldn't write well, but with the help of my teacher, I have made great p__5____.
查看答案
多项选择题

流量计量时，工况流量转换成标况流量主要是对（）的修正。

A、流量

B、压力

C、温度

D、湿度

E、热值
查看答案