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【单选题】
甲 .钢筋直径相同,所作冷弯试验的弯曲角相同,甲的弯心直径较小,则两钢筋的冷弯性能____。A.
甲较好
B.
相同
C.
乙较好
D.
无法判断
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反馈参考答案：
举一反三
【多选题】According to the discussion, in what two ways was the Federal Art Project successful? Choose 2 answers.
A.
It established standards for art schools.
B.
It provided jobs for many artists.
C.
It produced many excellent artists.
D.
It gave many people greater access to the arts.
【单选题】What does the passage mainly discuss?
A.
States' rights versus federal rights.
B.
The participation of state governments in railroad, canal, and turnpike construction.
C.
The roles of state and federal governments in the economy of the nineteenth century.
D.
Regulatory activity by state governments.
【简答题】DNA样品的均一性越高,其溶解过程的温度范围越_____
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