A <img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251122/13560358_0_1.jpg"> B <img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251122/13560358_0_2.jpg"> C <img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251122/13560358_0_3.jpg"> D <img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251122/13560358_0_4.jpg">

A 只考虑永久荷载与偶然作用的组合 B 偶然作用不乘以荷载分项系数 C 偶然作用乘以荷载分项系数 D 可变荷载不参与组合

A 12kN：6kN B 9kN：9kN C 6kN：12kN D 3kN：15kN

A P，拉力 B P，压力 C O D 0.5P，压力

A 轴心抗压强度设计值 B 轴心抗拉强度设计值 C 轴心抗压强度标准值 D 轴心抗拉强度标准值

A <img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251122/13560462_0.jpg"> B <img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251122/13560462_0_1.jpg"> C <img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251122/13560462_0_2.jpg"> D <img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251122/13560462_0_3.jpg">

A <img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251122/13560557_0_1.jpg"> B <img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251122/13560557_0_2.jpg"> C <img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251122/13560557_0_3.jpg"> D <img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251122/13560557_0_4.jpg">

A Ⅰ、Ⅱ B Ⅰ、Ⅱ、Ⅲ C Ⅱ、Ⅲ D Ⅰ、Ⅱ、Ⅳ

A <img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251122/13560562_0_1.jpg"> B <img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251122/13560562_0_2.jpg"> C <img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251122/13560562_0_3.jpg"> D <img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251122/13560562_0_4.jpg">

A <img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251122/13560566_0.jpg"> B <img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251122/13560566_0_1.jpg"> C <img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251122/13560566_0_2.jpg"> D <img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251122/13560566_0_3.jpg">