单项选择题
A.等肢角钢十字相连 B.不等肢角钢相连 C.等肢角钢相连 D.不等肢角钢长肢相连
A.d(0.5+1.414)/EA B.d(1.5+1.414)/EA C.d(2.5+1.414)/EA D.d(1.5+2.828)/EA
A.8304 B.8348 C.8392 D.8432