单项选择题
A.B<9mB.9m ≤B<14mC.14m ≤B<18mD.B≥18m
A.±50mmB.±70mmC.±90mmD.±100mm
A.600mmB.700mmC.1000mmD.1100mm
A.γ0S≤R(fd,ad)B.γ0S≤R(fd,ξcad)Z1C.γ0S≤R(fd,adc,ads)D.γ0S≤R(fd,ξcadc,ξsads)Z1(1-ξe)
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