93. The shearing stresses on a ship's structure are usually greatest at ______.

“褶皱作用” 正确的英文术语为 A: Folding B: Faulting C: Fracturing D: Shearing

Fault-related<br/>folds include() A: fault-bend fold B: fault<br/>propagation fold C: fault decollement fold D: fault<br/>shearing fold

There are two shafts in torsion with different materials. Knowing that the two have the same diameter and length and are exerted the same torque.Which one is correct in the following statements about the maximum shearing stress and the angle of twist ___.

In<br/>a strain ellipsoid for rock deformation, the maximum strain axis is<br/>parallel to() A: the<br/>maximum flattening surface B: the<br/>maximum tensile surface C: the<br/>maximum stretching direction of minerals D: the<br/>maximum shearing surface

In the fixedly combined circular shaft shown in the figure, the central part of the material is steel, shear modulus G1=80GPa, the outer material is copper and the shear modulus G2=39GPa. The distribution of shearing stress on cross section is___after torsional deformation. ① ② ③ ④http://image.zhihuishu.com/zhs/onlineexam/ueditor/201904/e48a2be70d9f4eec8d38b0270076b6e2.png

下列关于“应力、应变”的说法不正确的是 ( )。 A: 应力(stress)定义为“分布内力在一点的集度[ Pa]”，分：正应力σ和切(剪)应力τ； B: 应变(strain)定义为“单位长度的线变形量[m/m(无量纲)]”，分：正应变ε和切(剪)应变γ； C: 正应变(normal strain)ε和切应变(shearing strain)γ分别是由正应力σ和切应力τ所产生的； D: “应力-应变关系曲线”—“物性曲线”一般是线性的，即：应力与应变成正比；