用位移法计算超静定结构时，独立的结点角位移数等于（）.
A.铰结点数
B.刚结点数
C.多余约束数
D.不确定
参考答案：B
— How was your trip?
— Fine but _____. Milan was interesting. It's bigger than I expected, however a little _____ and dirtier. [ ]
A. disturbing; clumsier
B. tiring; noisier
C. boring; duller
D. freezing; brighter
下述程序的输出结果是( )。 long fun(int n) long s； if(n==1||n==2) s=2； else s=n-fun(n-1)； return s; main() printf("%1d\n"，fun(3))；
A．1
B．2
C．3
D．4
