CRH1A型动车组的辅助压缩机设在()车。
A.Mc
B.Tp
C.Tb
D.M
参考答案:B
用括号中所给单词的意义相反的词填空。
1. My father ________ watching TV. (like)
2. The Main Road is very _________, there are so many cars and people. (quiet)
3. She doesn't like the _________ jacket, she wants a new one. (new)
4. Tom draws a boy with a _________ nose. (small)
5. I think maths is too_________. (interesting)
组分的物质的量与混合气体中各组分物质的量的总和之比表示的是气体的()。
A、体积分数
B、质量浓度
C、物质的量浓度
D、摩尔分数