皮皮学，免费搜题
登录
搜题
【简答题】
实验是学习与研究化学的一种重要方式。 ( 1 )用如图一装置进行实验,挤出浓氨 水。 1 实验现象是 。 2 该实验说明微粒具有的性质是 。 ( 2 )如图二为粉尘爆炸的实验装置。用空气吹散烘干的面粉,瞬间 发生爆炸,硬纸板盖被冲飞,蜡烛熄灭。 1 吹散面粉的目的是 。 2 储存面粉、汽油等易燃物或易爆物时,应注意 。
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】When someone says “The sweater looks good on you.”, you may say_________.
A.
I don’t think so.
B.
Thank you. I got it on sale.
C.
Really? I like it very much.
【单选题】To face the music Like every
language, American English is full of special expressions, phrases that come
from the day-to-day life of the people and develop in their own way. Our
expression today i...
A.
To face something far less pleasant.
B.
To face the stage.
C.
To face the back of one’s horse.
D.
To face one’s leader.
【单选题】To face the music Like every
language, American English is full of special expressions, phrases that come
from the day-to-day life of the people and develop in their own way. Our
expression today i...
A.
When we are playing basketball.
B.
When we are making a speech.
C.
When we are having a party.
D.
When we are talking with somebody.
【单选题】To face the music Like every
language, American English is full of special expressions, phrases that come
from the day-to-day life of the people and develop in their own way. Our
expression today i...
A.
1
B.
2
C.
3
D.
4
【单选题】在Excel中,某一工作薄中有Sheet1、Sheet2、Sheet3、Sheet4共4张工作表,现在需要在Sheet1表中某一单元格中显示从Sheet4表的A3至C3各单元格中的数值之和,正确的公式写法是( )。
A.
SUM([Sheet4]Sheet4!A3+[工作簿1]Sheet1!B3+Sheet1!C3)
B.
SUM ([Sheet4]Sheet4!A3:C3)
C.
SUM(Sheet4/[工作簿1]Sheet1!A3:B3)
D.
SUM([Sheet4]Sheet4!A3+Sheet1!C4)
【简答题】请针对本学期前三周的网络学习写一份总结
相关题目：
参考解析：
知识点：
题目纠错 0
发布
