如图，盒装纯牛奶的体积为_1m3．若该牛奶的密度是1.2×103kg/m3，则牛奶的质量为_2kg．喝掉一半后，牛奶的密度将_3．（填“变大”、“变小”或“不变”）_刷题宝

题干

如图，盒装纯牛奶的体积为____ m³．若该牛奶的密度是1.2×10³kg/m³，则牛奶的质量为____ kg．喝掉一半后，牛奶的密度将____ ．（填“变大”、“变小”或“不变”）

上一题下一题 0.0难度选择题更新时间:2019-05-16 07:38:42

答案(点此获取答案解析）

2.5×10^﹣4,0.3,不变

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补全对话

A. Is she good to you?

B. What does she look like?

C. What about your Chinese teacher?

D. Is she English or American?

E. What does he look like?

A: Who is your English teacher?

B: Miss Green.

A:（1）____

B: She is tall and thin. And she has curly hair.

A:（2）____

B: Yes, of course. We all love her. She's fun. She often tells us 　　interesting stories.

A: That sounds great. （3）____

B: Oh, she's American.（4）____

A: He's a man. He's from China, but his English is good.

B: （5）____

A: He is of medium build. He has short black hair. He is friendly to us.

B: Good! I hope you can learn Chinese well!

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在教学调查中，甲、乙、丙三个班的数学测试成绩分布如下图，假设三个班的平均分都是75分,S₁,S₂,S₃分别表示甲、乙、丙三个班数学测试成绩的标准差，则有(　　)

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元素周期表中钠元素的信息如右图所示，对图中信息理解不正确的是 ( )

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50＋(26＋4)=____

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