下载APP
【单选题】
一桶煤油，用掉一半，剩下的煤油
[ ]
A.
密度、热值不变，比热容变为原来的一半
B.
比热容、密度不变，热值变为原来的一半
C.
热值、比热容不变，密度变为原来的一半
D.
密度、热值、比热容都不变
举报
题目标签：煤油
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】A Roadmap for the Planet From the 18th through the mid-19th century, whale oil provided light to much of the Western world. At its peak, whaling employed 70,000 people and was the United States’ fifth...
A.
People replaced whale oil with kerosene for lighting.
B.
People have realized that whaling is too savage.
C.
People didn’t buy whale oil because of its high price.
D.
People were unwilling to go farther to kill whales.