【判断题】任何轴向受拉杆件中,横截面上的最大正应力都发生在轴力最大的截面上。
【单选题】As a salesman, much of his success comes from being what his customers want.
【判断题】任何轴向受拉杆件中,横截面上的最大正应力都发生在轴力最大的截面上。
【单选题】He admits that much of his success is _________ his good luck.
【单选题】He ____ much of his success and happiness _____his wife and children.