【单选题】52 / 61第二类 T 形截面弯矩方程中,翼缘贡献项为?Aα1fc(bf′−b)hf′(h0−hf′/2)\alpha_1 f_c(b_f'-b)h_f'(h_0-h_f'/2)α1fc(bf′−b)hf′(h0−hf′/2)正确BfyAsh0f_y A_s h_0fyAsh0Cα1fcbh0\alpha_1 f_c b h_0α1fcbh0D零参考答案A参考解析α1fc(bf′−b)hf′(h0−hf′/2)\alpha_1 f_c(b_f'-b)h_f'(h_0-h_f'/2)α1fc(bf′−b)hf′(h0−hf′/2)。