【多选题】气体化学分析法所使用的仪器主要有( )。
【单选题】What is Bob going to do this weekend?
C.
To stay at home doing some washing.
【多选题】气体化学分析法所使用的仪器主要有( )。 A.奥氏气体分析仪
【单选题】What is Bob going to pay for?
【单选题】听力原文:What is Bob going to pay for? (7)
【简答题】( )是一组有固定数目和相同类型成分分量的有序集合。
【多选题】气体化学分析法所使用的仪器主要有( )。
【单选题】()the Manager’s not available at the moment. But the Assistant Manager is here.How Can I help you, madam?
C.
To talk to the Manager
D.
It is entirely our fault