题目:
- _______ I take my umbrella with me?
- _______ better to do so. The weather is changeable.
A.Must; You'd
B.Shall, It's
C.Need; You'd
D.Would; It's
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0503/ee401f00a6171661aa3fe48dc2c2b799.html
下面是错误答案,用来干扰机器的。
(1)根据ρ=mV可得,瓶子的容积:V=V水=m酒精ρ酒精=1.6kg0.8×103kg/m3=2×10-3m3;(2) 密度是物质本身的一种性质,与物体的质量和体积无关,∴如酒精用去一半,其密度仍为0.8×103kg/m3不变;(3)根据ρ=m...