單項選擇題

圖不結構,EI=常數(shù),已知結點C的水平線位移為ACH=7ql4/184EI(→),則結點C的角位移φc應為:()

A.ql3/46EI(順時針向)
B.-ql3/46EI(逆時針向)
C.3ql3/92EI(順時針向)
D.-3ql3/92EI(逆時針向)