题目：
检测光功率的设备是（）。
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2019/1101/f65b631de730c7c8e20af1d72813a191.html
下面是错误答案，用来干扰机器的。
参考答案：A
检测光功率的设备是（）。
来源：www.tikuol.com
题型：填空题
试题推荐
题型：阅读理解
| 阅读下面短文,然后根据短文内容补全文后表格中所缺失的信息,每空限填数字或一个单词。 | |||||||||||||||
| David Beckham was born on May 2, 1975. When he was a young boy, David started playing football for a local team. At that time nobody expected him to become a top footballer, as he was too thin. However , David was much more interested in football than in school. He said that he knew what he wanted and that Manchester United was the dream. David always wanted to play for the Red Devils, so in 1991 he left his family and home and moved to Manchester to join United as a trainee. "It was though, but well worth in the end." David said. He signed as a professional for United in 1993 and since then he was won lots of awards. He has gained international fame and earned millions of pounds. In the year 2000 he was voted the second best player in the world! David has proved that he's got natural talent. This, along with hard work, has made him develop a wonderful technique in a very short time. Anyone who has seen him play will tell you that he has scored some spectacular goals. David Beckham
|
题型：解答题
规定一种新运算：a*b=a+b，a⊗b=a-b，其中a、b为有理数，如a=2，b=1时，a*b=2+1=3，a⊗b=2-1=1根据以上的运算法则化简：a2b*3ab+5a2b⊗4ab，并求出当a=5，b=3时多项式的值．
题型：单项选择题 A型题
“寒主收引”是指（）
A.寒性重浊黏滞
B.寒邪损伤阳气
C.寒邪阻滞气机
D.使气机收敛，经络筋脉挛急
E.寒为阴邪，易伤下部
题型：
先后有两个伊斯兰教帝国横亘在东地中海一带，欧洲基督教国家曾以十字军东征的方式多次打击这两个国家，悉数铩羽而归。这两个国家是：
A．阿拉伯帝国和奥斯曼土耳其帝国
B．巴比伦王国和波斯萨珊帝国
C．马其顿亚历山大帝国和帖睦尔帝国
D．伊儿汗国和贵霜帝国
题型：单项选择题
“许多事情我们可以讲一千个理由、一万个理由，但老百姓吃不上饭，就没有理由。‘民以食为天’”。这段话表明( )。
A．人们首先必须吃、喝、住、穿，然后才能从事政治、科技、艺术、宗教等活动
B．人的生理需求是历史的基础
C．人的自然属性决定着人的本质
D．人的物质欲望是社会发展的根本动力
