A.组合截面的惯性矩等于各部分惯性矩之和
B.组合截面的惯性矩需要考虑质心距的平方
C.组合截面的惯性矩使用平行轴定理进行计算
D.组合截面的惯性矩与槽钢之间的距离有关
A.组合截面的惯性矩等于各部分惯性矩之和
B.组合截面的惯性矩需要考虑质心距的平方
C.组合截面的惯性矩使用平行轴定理进行计算
D.组合截面的惯性矩与槽钢之间的距离有关
A.0
B.bh²/12
C.bh³/2
D.bh²/8
A.惯性矩减小一倍
B.惯性矩不变
C.惯性矩增加八倍
D.惯性矩增加四倍
A.2
B.4
C.1/2
D.1/4
A.I_z=I_a+I_b
B.I_z=I_a+I_b+2A(h/2)^2
C.I_z=I_a+I_b+Ah^2
D.I_z=I_a+I_b+2Ah^2
A.πd²/4
B.πd⁴/32
C.πd³/16
D.πd⁴/64
A.<img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240111/1704959828111363.png">
B.<img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240111/170495982813419.png">
C.<img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240111/1704959828155698.png">
D.<img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240111/1704959828175385.png">
A.(a)
B.(b)
C.(c)
D.(d)
A.<img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240111/1704959827846305.png">
B.<img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240111/1704959827873890.png">
C.<img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240111/1704959827893212.png">
D.<img src="https://cg-service.oss-cn-shanghai.aliyuncs.com/20240111/1704959827952714.png">