在导线上安装防振锤,以吸收及减弱振动的()。
A.力量
B.次数
C.能量
D.振幅
参考答案:C
Many years of hard work_______ his great success in the development of this new type of material.
A.due to
B.thanks to
C.contributed to
D.looked into
有一幢高层底部大空间剪力墙结构,底部框支层楼层剪力标准值V=7800kN,框支层有框支柱8根,下列每根框支柱所分配的剪力标准值(kN)( )项是正确的。
A.156 B.195 C.165 D.180