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牌号为HRB400的钢筋在施工图中的符号是

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A、A

B、B

C、C

D、D

参考答案:

C

HPB300是一级钢筋，符号是Φ（一个圈，中间一坚））HRB335是二级钢筋，符号是Φ底下加一横（一个圈，中间一坚，底下一横）符号标不出来HRB400是三级钢筋，符号是（一个圈，中间两坚，底下一横）

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