题型:名词解释 如题图所示原木屋架,选用红皮云杉TC13B制作。斜杆D3原木梢径d=100mm,其杆长L=2828mm。D3杆轴心压力设计值N=-22.02kN,当按稳定验算时,斜杆D3的轴心受压承载力σc与下列()项数值最为接近。A.4.89N/mm2B.6.22N/mm2C.7.94N/mm2D.10.09N/mm2 查看答案
题型:名词解释 I’d like to go _________on vacation.A.somewhere relaxedB.anywhere relaxedC.somewhere relaxingD.relaxing anywhere 查看答案