A:2f(2018)<f(2016)<4f(2017)
B:2f(2018)>f(2016)>4f(2017)
C:4f(2017)<2f(2018)<f(2016)
D:4f(2017)>2f(2018)>f(2016)
某烷烃的一个分子里含有9个碳原子,其一氯代物只有两种,该烷烃的名称是( )
It's a sunny day in the farm today. My aunt has a farm. The farm is very small. There are twelve horses, sixteen cows and fifty hens. My aunt likes tomatoes very much. So she has many tomatoes in the farm. Look! The tomatoes are red. They are very beautiful.
It's sunny in the farm today.
如图所示实验,试管口木塞冲出过程( )