,梁的质量忽略,则结构的自振频率为( )。
题46图A.
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D.
[单选题]设a,b为常数,且,则( )。A.a任意,b=0B.a任意,b=-1C.D.
[单选题]设a>0,b≠0为常数且,则(a,b)的取值为( )。A.(1,2)B.(1,0.5)C.(2,0.5)D.(2,1)
[单选题]设a>0,b≠0为常数且,则(a,b)的取值为( )。A.(1,2)B.(1,0.5)C.(2,0.5)D.(2,1)
[单选题]设a>0,b≠0为常数且,则(a,b)的取值为( )。A.(1,2)B.(1,0.5)C.(2,0.5)D.(2,1)
[单选题]设a>0,b≠0为常数且,则(a,b)的取值为( )。A.(1,2)B.(1,0.5)C.(2,0.5)D.(2,1)
[单选题]设a>0,b≠0为常数且,则(a,b)的取值为( )。A.(1,2)B.(1,0.5)C.(2,0.5)D.(2,1)
[单选题]设a>0,b≠0为常数且,则(a,b)的取值为( )。A.(1,2)B.(1,0.5)C.(2,0.5)D.(2,1)
[单选题]设a>0,b≠0为常数且,则(a,b)的取值为( )。A.(1,2)B.(1,0.5)C.(2,0.5)D.(2,1)
[单选题]设a>0,b≠0为常数且,则(a,b)的取值为( )。A.(1,2)B.(1,0.5)C.(2,0.5)D.(2,1)
[单选题]设a>0,b≠0为常数且,则(a,b)的取值为( )。A.(1,2)B.(1,0.5)C.(2,0.5)D.(2,1)