题型:问答题 Why not stay at home _____ the road is so slippery after the heavy snow?A. since that B. after that C. then that D. now that 查看答案
题型:问答题 纯钛支架焊接时,焊接面应处理为A.焊接面之间不留间隙,焊接口应呈小面积的面与面接触B.焊接面之间的间隙为0.1~0.15mm,呈截面接触C.焊接面之间间隙为0.1~0.5mm,呈点状接触D.焊接面之间间隙为0.2~0.25mmE.焊接面之间间隙为0.25~0.3mm 查看答案