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【单选题】
以下( )不属于常用的钢筋。A.
电动机械
B.
卷扬机式机械
C.
阻力轮机械
D.
液压机械
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反馈参考答案：
举一反三
【简答题】微型计算机诞生于第几代？
【简答题】塑料的主要成分是________，热塑性塑料的特点是_______ ，热固性塑料的特点是______。 人们根据需要制成了许多特殊用途的塑料，如________塑料、_______塑料、________塑料等，其中_________塑料在宇宙航空、原子能工业和其他尖端技术领域将发挥重要的作用。
【单选题】What is the main problem?
A.
He doesn't know what color his friend likes in a gift.
B.
His friend has a broken knapsack.
C.
The gift he wants isn't there.
D.
He doesn't know what his friend will find useful in a gift.
【单选题】In the ________ of the race between the tortoise and the hare, the tortoise wins, even though he is slow, because he keeps going with determination.
A.
fable
B.
tale
C.
story
D.
saga
【简答题】Mark Twain was an American writer.One day he went to a city by train.He wanted to see one of his friends there.He was a very busy man.He usually forgot something.When he was in the train, the conducto...
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