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【判断题】
射频电视信号中，伴音载频比图像载波高6.5MHZA.
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B.
错误
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【简答题】根据出版类型说出下列文献的类型: 《计算机自冷却机箱 》(G06F1/20)的文献出版类型 是( )。
【简答题】根据出版类型说出下列文献的类型: 《建筑材料》(ISBN 978-7-5625-2671-1)的文献出版类型是 ( )。
【简答题】根据出版类型说出下列文献的类型: 《机械密封通用规范》( GB/T 33509-2017 )的文献出版类型是( ) 。
【简答题】闽江上游的三大溪叫什么?在何处汇人闽江干流?
【简答题】短文填空，一空一词。 Welcome to Park District. This is a very busy district. There are many places 1 the neighborhood. If you go 2 New Street, you can see a 3 next to the pay phone. If you want to 4 shopping, t...
【单选题】The unemployment rate in this district_____from 6% to 5% in the past two years.
A.
has fallen
B.
had fallen
C.
is falling
D.
was falling
【简答题】闽江上游的三大溪叫什么?在何处汇人闽江干流?
【单选题】The unemployment rate in this district from 6% to 5% in the past two years. A．has fallenB．had fal
A.
The unemployment rate in this district____from 6% to 5% in the past two years. A．has fallen
B.
had fallen
C.
is falling
D.
was falling
【单选题】The unemployment rate in this district from 6% -- 5% in the past two years.
A.
has fallen
B.
had fallen
C.
is falling
D.
was falling
【简答题】根据出版类型说出下列文献的类型: 《 建筑节能与低碳建筑 》(ISSN 1671-7341) 的文献出版类型 是( )。
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