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【单选题】
有一高速公路宽 120米,若在1:10000地理图上用符号表示,应采用A.
不依比例符号
B.
半依比例符号
C.
象征符号
D.
依比例符号
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反馈参考答案：
举一反三
【单选题】( )is produced by mixing a small amount of an air-en-training agent with ordinary Portland cement.
A.
Low heat cement
B.
Portland pozzolana
C.
Air-en-training cement
D.
High strength cement
【单选题】____________ I arrived in South Africa , I was struck by the very great difference in the atmosphere of the country.
A.
From the moment
B.
By that time
C.
Since the moment
D.
During the time
【单选题】____________ I arrived in South Africa, I was struck by the very great difference in the atmosphere of the country.
A.
Since the moment
B.
During the time
C.
By that time
D.
From the moment
【简答题】portland cement
【简答题】7 Portland cement
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