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【多选题】
流化床中气体分布板的作用有( )。A.
支承
B.
分流
C.
混合
D.
导向
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举一反三
【简答题】A subway is not just an important form of transport. It is also a window for other people to learn about local cultures. Beijing, China The Beijing Subway was opened in 1969 and is the oldest subway s...
【单选题】_____ for the young man to spit in the subway!
A.
How bad manners it is
B.
How bad manners they are
C.
What bad manners they are
D.
What bad manners it is
E.
What an interesting
【单选题】Why is not necessary for the man to take a taxi to the hotel?
A.
Because there is an excellent bus service.
B.
Because there is an excellent railway service.
C.
Because there is an excellent subway service.
【简答题】电路是由 、 、 和导线构成。
【简答题】电路通常是由( )、( )和( )及导线构成的。
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