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【简答题】
在排出管路上安装调节阀,出口调节阀管路阻力损失(),需要泵提供更多的能头克服附加的阻力损失,使装置()不高,长期使用经济性差,特别是陡降的H-Q曲线更不经济。
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【简答题】诗歌主要特点是 、 、 和音乐性。
【简答题】尺寸偏差是代数差,所以偏差可能是 ( ) 值、 ( ) 值或 ( ) 。
【简答题】C#是一种面向( )的高级程序设计语言。(对象/过程)
【单选题】Professor White wrote a______report yesterday.
A.
two-thousand-word
B.
two-thousand-words'
C.
two-thousand-words
D.
two-thousands-word
【单选题】Mr.Thomas wrote a __ book last year.
A.
ten-thousand-words
B.
ten-thousand-words C ten-thousands-words D. ten- thousands-word
【单选题】Every teacher should write a ______ report this term. A. three-thousand-word B. three-thousand-words C. three-thousands-word D. three-thousands-words
A.
three-thousand-word
B.
three-thousand-words
C.
three-thousands-word
D.
three-thousands-words
【单选题】How many English words has the man learned?
A.
Two thousand.
B.
Three thousand.
C.
Two hundred.
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