單項選擇題鋼筋筋調(diào)直,可用機(jī)械或人工調(diào)直。經(jīng)調(diào)直后的鋼筋不得有局部彎曲、死彎、小波浪形,其表面?zhèn)鄄粦?yīng)使鋼筋截面減?。ǎ?/strong>

A.3%
B.5%
C.10%
D.15%