计算 −2−3−8−1×(−2)−2×(−12)−2&#x0_刷题宝

题干

计算 −2−3−8−1×(−2)−2×(−

1

2

)−2×(π−3.14)0 ．

上一题下一题 0.0难度选择题更新时间:2018-12-25 10:58:28

答案(点此获取答案解析）

解：原式=﹣

1

8

﹣

1

8

{#/mat

同类题1

判断对错．

画出轴对称图形的另一半．

解：

同类题2

先秦时期，引起“一人跖(踏)来而耕，不过十亩”到“一夫挟五口，治田百亩”变化的根本原因是

同类题3

某蛋白质含n个氨基酸，由m条肽链组成，该蛋白质至少含氧原子数为（）

同类题4

假设你是张丽，是家住四川芦山地震灾区林娜的笔友。她给你发来了一封电子邮件，请看后给她回复，针对她的问题给她一些建议，并谈谈你的想法。

Dear Zhang Li,
I have been so sad these days. As you know, an earthquake happened in my hometown and both my parents died. Though the government gives us much help, my little sister and I cried every night because of missing, and I don’t want to learn anything. I find it hard to talk with the people around. Life is dark for me without parents’ love!
What should I do? I really need your help.
Yours,
Lin Na

Dear Lin Na,
I'm so sorry to hear the sad news.
I understand you .
_______________________________________________________________________________
_________________________________________________________
I hope what I said can help you.
Yours,
Zhang Li

同类题5

在一定条件下，测得2CO₂2CO+O₂(反应从CO₂开始)平衡体系的平均相对分子质量为M，在此条件下，CO₂的分解率为

小学学科试题库

初中学科试题库

高中学科试题库