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【判断题】
流化床气固混合搅拌剧烈，气固相接触面积大，传热传质面积大，传热传质速度快，容易取走热量，使床层温度均匀，这是流化床的优点之一。A.
正确
B.
错误
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【单选题】听力原文： For many years, T-shirts were simple short-sleeved undershirts only for men and boys. T-shirts used to be of one colour -- white. And since they were worn under shirts, they were generally not s...
A.
Taking part in sports.
B.
Listening to music.
C.
Watching TV.
D.
Enjoying a film.
【单选题】听力原文： For many years, T-shirts were simple short-sleeved undershirts only for men and boys. T-shirts used to be of one colour—white. And since they were worn under shirts, they were generally not seen...
A.
Taking part in sports.
B.
Listening to music.
C.
Watching TV.
D.
Enjoying a film.
【单选题】听力原文： For many years, T-shirts were simple short-sleeved undershirts only for men and boys. T-shirts used to be of one colour — white. And since they were worn under shirts, they were generally not se...
A.
Taking part in sports.
B.
Listening to music.
C.
Watching TV.
D.
Enjoying a film.
【单选题】听力原文： For many years, T-shirts were short sleeved undershirts only for men and boys. T-shirts used to be of one color--white. And since they were worn under shirts, they were generally not seen. Today...
A.
When they take part in sports.
B.
When they watch a film.
C.
When they go shopping.
D.
When they read a hook.
【简答题】1921年7月中国一大在上海举行,( )是一大的正式代表
【单选题】听力原文： For many years, T-shirts were simple short-sleeved undershirts for men and boys. T-shirts used to be of one colour—white. And since they were worn under shirts, they were generally not seen. Tod...
A.
Listening to music.
B.
Watching TV.
C.
Taking part in sports.
D.
Enjoying a film.
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