习惯上划分东西半球的分界线是[ ]
A、0°经线和180°经线
B、20°E,160°W
C、0°经线和0°纬线
D、20°W,160°E
答案:D
Regulations on the levy of import duties on incoming passenger's luggage and articles shall be formulated by ().
A. the Customs General Administration
B. the Tariff Commission
C. the State Council
D. the Economic Planning Commission
某台卸荷台的挡土墙,如图所示,H1=2.5m,H2=3m,L=0.8m,墙后填土的重度γ=18kN/m3,c=0,。按朗肯土压力理论计算,挡土墙墙后BC段上作用的主动土压力合力最接近下列哪个选项?()
A.93kN
B.106kN
C.121kN
D.134kN