In 1970, if the cost to produce one widget was $0.07, what would have been the total cost
A. $1,540
B. $14,000
C. $20,650
D. $22,750
E. $34,300
如图某一滑动面为折线形的均质滑坡,其主轴断面及作用力参数如表所示,则该滑坡的稳定性系数Fs最接近()。 滑块编号 下滑力Ti/(kN/m) 抗滑力Ri/(kN/m) 传递系数Ψj
① 3.5×104 0.9×104 0.756
② 9.3×104 8.0×104 0.947
③ 1.0×104 2.8×104
A. 0.80
B. 0.85
C. 0.90
D. 0.95