观察下列各式的规律:①223=2+23;②338=3+38;③4415=4+41 发布时间:2017-04-14 19:33 │ 来源:www.tikuol.com 题型:选择题 问题: 观察下列各式的规律:①223=2+23;②338=3+38;③4415=4+415;…;依此规律,若m10n=m+10n;则m、n的值为( )A.m=10,n=21B.m=10,n=99C.m=9,n=19D.m=9,n=80
题型:选择题 按《铁路工程地质勘察规范》(TBl0012-2001),下列对岩质隧道进行围岩分级的确定方法中,( )不正确。A.岩石坚硬程度及岩体完整程度是隧道围岩分级的基本因素B.当隧道涌水量较大时,基本分级Ⅰ~Ⅴ级者应对应修正为Ⅱ~Ⅵ级C.洞身埋藏较浅,当围岩为风化土层时应按风化层的基本分级考虑D.存在高地应力时,所有围岩分级都要修正为更差的级别 查看答案
题型:选择题 — Thank you so much for saving my son and bringing him home. — Don't mention it. I only did what anyone else ____ in my place. [ ]A. must do B. should do C. may have done D. would have done 查看答案