单项选择题 2. The oxygen carrier of muscle is the globular protein myoglobin. Which of the following amino acids is highly likely to be localized within the interior of the molecule?
单项选择题 (单选)通常如何计算旋风分离的压降()
单项选择题 【单选题】图示铆接件,荷载为P,铆钉直径为d,上部板件的形状尺寸如图所示。下列结论中哪些是正确的?( )。 铆钉在剪切面上的剪应力τ=4P/3πd2. 铆钉的挤压应力σC=P/3dt. 上部板件在截面1-1处拉应力σ1=P/3(b1-d)t. 上部板件在截面3-3处拉应力σ3=P/(b3-d)t.