A.
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[单选题]如图5-4-6所示,截面对z轴的惯性矩为( )。图5-4-6A.B.C.D.
[单选题]如图5-4-6所示,截面对z轴的惯性矩为( )。图5-4-6A.B.C.D.
[单选题]如图5-4-6所示,截面对z轴的惯性矩为( )。图5-4-6A.B.C.D.
[单选题]如图5-4-6所示,截面对z轴的惯性矩为( )。图5-4-6A.B.C.D.
[单选题]如图5-4-6所示,截面对z轴的惯性矩为( )。图5-4-6A.B.C.D.
[单选题]如图5-4-6所示,截面对z轴的惯性矩为( )。图5-4-6A.B.C.D.
[单选题]如图5-4-6所示,截面对z轴的惯性矩为( )。图5-4-6A.B.C.D.
[单选题]如图5-4-6所示,截面对z轴的惯性矩为( )。图5-4-6A.B.C.D.
[单选题]如图5-4-6所示,截面对z轴的惯性矩为( )。图5-4-6A.B.C.D.
[单选题]如图5-4-6所示,截面对z轴的惯性矩为( )。图5-4-6A.B.C.D.