什么是吸收率?
参考答案:
吸收效果的好坏可用吸收率表示,在气体吸收过程中,吸收质被吸收的量与其原在惰性气体中的含量之比称为吸收率。
请你把下面句子中的错误选出来,并改正。
( ) 1. A cow eat grass. _________________
A B C
( ) 2. I do my homework yesterday. _________________
( ) 3. Are you girl? _________________
( ) 4. This is mine coat. _________________
( ) 5. My shoes is blue. _________________
—Would you like ______ cake?
一No, thanks. I'm full. [ ]
A. another
B. other
C. else