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【判断题】
图 示 结 构 中 的 反 力 H=m/l 。 ( )
A.
正确
B.
错误
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参考答案:
举一反三
【判断题】燃烧结束后,直接就可以称重避免冷却吸水影响燃烧效果。
A.
正确
B.
错误
【简答题】阅读理解。 I am a boy from the USA.Now I go to school in China.I have Chinese food now.I like it.I usually have some porridge and milk for breakfast at home with my parents.Sometimes I have some small cake...
【单选题】沿程损失产生的主要原因是( )
A.
壁面切应力
B.
流体的粘性
C.
局部旋涡和二次流
【简答题】On a cold November afternoon, my mother and I were walking back home from a pizza store. We had bought many things. We were dressed , and I was feeling a little as I was carrying our shopping bag, so ...
【单选题】There is—-tree in the garden.
A.
a
B.
an
C.
the
D.
X
【简答题】On a cold November afternoon, my mother and I were walking back home from a pizza store. We had bought many things. We were dressed 26 , and I was feeling a little 27 as I was carrying our shopping, s...
【单选题】I will be away for at least one year and I’d appreciate ______ from you now and then.
A.
having heard
B.
hearing
C.
heard
D.
hear
【单选题】沉淀池由四个功能区组成,其中污泥区的主要作用是
A.
配水
B.
泥水分离
C.
集水集泥
D.
污泥收集、浓缩和排放
【单选题】Now that she is sick with cold, I feel I ____ have stopped her from going out in the rain.
A.
could
B.
might
C.
must
D.
ought to
【简答题】On a cold November afternoon, my mother and I were walking back home from a pizza store. We had bought many things. I was feeling a little as I was carrying our shopping bag, so I decided to throw som...
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