A.<1.7 B.>1.7 C.<2.0 D.>2.0
A.松動壓力與隧道埋深成正比 B.松動壓力與隧道埋深成反比 C.松動壓力與隧道埋深無關(guān) D.松動壓力與隧道埋深成非線性關(guān)系
A.(1.5~2)hq B.(2~2.5)hq C.(2.5~3)hq D.(3~3.5)hq