【判断题】根据非数字格计算运输问题的行位势和列位势。
【简答题】Mary immediately felt uneasy when she found her cousin John _______ her. (gaze upon)
【单选题】一对传递动力的渐开线闭式直齿轮,主从、动轮均为 软齿面钢制齿轮,精度等级为 7 级,为了提高其齿面的 接触强度,在下列措施中最有效的是 。
【单选题】有一对传递动力的渐开线闭式直齿圆柱齿轮传动,现设计主、从动轮均为软齿面钢制齿轮,精度等级为7级。如欲在中心距和传动比不变的条件下提高其接触强度,在下列各措施中最有效的是()
【简答题】The child was unaffected by the chaos because of her mother ’ s gaze.
【单选题】He offered to ______ her a hand, as the suitcase was too heavy for her to carry.
【简答题】A prolonged gaze or stare in the United States is considered_____________.