20m跨度的托架下弦节点如下图所示，托架各杆件与节点板之间采用等强的对接焊缝进行连接，焊缝质量等级为二级。斜腹杆翼缘板拼接板为2-100×12，拼接板与节点板之间采用角焊缝连接，取hf＝6mm，按等强连接的原则，试问，该角焊缝的长度l1(mm)与下列()项数值最为接近。
A. 360
B. 310
C. 260
D. 210
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本票的持票人未按照规定期限提示付款的，丧失对出票人的追索权。()
A. 正确
B. 错误
在通常情况下，资金的时间价值是指无风险条件下的社会平均资金利润率。()
A. 正确
B. 错误
A．The Westminster Bridge is the most famous one in the world.B．The Big Ben strikes fou
A. The Westminster Bridge is the most famous one in the world.
B. The Big Ben strikes four times an hour.
C. At least three bridges span the Thames.
D. The House of Commons and the House of Lords sit on the Thames.
A．At the seaside.B．In a restaurant.C．On a bus.D．On the plane.
At the seaside.
B. In a restaurant.
C. On a bus.
D. On the plane.
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