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【简答题】
当吸收剂用量为最少用量时,吸收过程的推动力为 ,则所需填料层高度将为 。
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举一反三
【单选题】点(-1,2,3)在第几卦限( )
A.
1
B.
2
C.
3
D.
4
【单选题】在空间直角坐标系里,点(-2,1,-3)在第几卦限
A.
2
B.
4
C.
6
D.
8
【单选题】—What’s on the plate? —There ______ some jam on it.
A.
are
B.
is
C.
have
D.
has
【单选题】—What’s on the plate? —There _____ some eggs and cakes on it.
A.
is
B.
are
C.
was
D.
were
【单选题】——What’s on the plate? There _______some rice on it.
A.
is
B.
are
C.
has
D.
have
【判断题】Online learning will take the place of traditional teaching one day.
A.
正确
B.
错误
【单选题】—What’s on the plate? some eggs and cakes on it?
A.
—There _____some eggs and cakes on it.
B.
is
C.
are
D.
was
E.
were
【单选题】点(1,-2,3)在空间直角坐标系的第几卦限?
A.
1
B.
2
C.
3
D.
4
【单选题】点(-4,2,-1)在第几卦限?
A.
1
B.
3
C.
6
D.
7
【简答题】Do you think online learning will take the place of traditional teaching? Why or why not?