旋推头颈淋巴腺是如何进行旋推的()。
A.由内向外
B.从外向内
C.从上向下
D.从下向上
E.平推
参考答案:B
汉译英:“离岸价;到岸价”,正确的翻译为:( )
A.free on board; cost and freight
B.insurance and freight; free on board
C.free on board; cost, insurance and freight
D.cost and, freight; insurance and freight
某对称工字形截面如图16-17所示,
,计算长度lo=5.5m,as=a's=50mm,混凝土强度等级为C30,fc=15N/mm2,采用HRB335级钢筋,fy=310N/mm2,承受轴向压力设计值N=300kN,弯矩设计值M=200kN*m。对称配筋的截面面积As=A's=()mm2。
A.1035.6
B.913.1
C.871.6
D.803.5