41.一個薄壁圓柱內壓容器，其圓周應力(circumferential stress) 與縱向應力(longitudinal stress)的比值為何？ (A) (B) (C) (D)

44.如【圖 44】所示之桁架，有關此結構之特性，下列敘述何者正確？ (A)完全拘束(completely constrained)、靜定(determinate) (B)不完全拘束(partially constrained)、靜定(determinate) (C)不正常拘束(improperly constrained)、靜不定(indeterminate) (D)完全拘束(completely constrained)、靜不定(indeterminate)