图示结构(不计轴向变形)AB杆轴力为(EI=常数):()
A.5ql/8
B.3ql/8
C.5ql/16
D.3ql/16
参考答案:B
解析:交于B点三杆只受轴力。
---- How did you find your visit to the museum?
---- I really enjoyed it. It was _____ than I expected.
A.much more interesting
B.even much interesting
C.so more interesting
D.a lot more interested
锅炉省煤器的主要作用是什么?