What is the highest and largest palatial architectural complex in the world today?
A、The Forbidden City.
B、The Potala Palace.
C、The Imperial Palace.
D、The Temple of Heaven.

A.温度的变化会引起杆件内力的变化
B.支座的不均匀沉陷会引起杆件内力的变化
C.杆件长度的制作误差不会引起杆件内力的变化
D.如仅有一根杆件破坏，该结构尚能继续承担荷载

A.极限抗拉强度
B.承压性能
C.受拉性能
D.受弯性能