A.内能比热容
B.内能密度
C.热量密度
D.比热容密度
答案:D
用所给单词的适当形式完成句子.
1. Here are some things they have learned from (scientist) studies.
2. Sunglasses are used for (keep) out the sun.
3. The students are (confuse) about the difficult problems.
4. I'm considering (study) in Beijing or Shanghai.
5. I felt (embarrass) when everyone looked at me.
战略的实质就是()最大化。
A、价值
B、价格
C、人才
D、资源