【单选题】She was worried that he might have ____ an accident.
【简答题】以下冷冲压加工不属于成形工序的是(A. 切口 B. 压印 C. 胀形 D. 拉深
【单选题】齿轮的加工方法分为无屑加工和切削加工,以下属于切削加工的是()
【单选题】He is doubtful about the decision she had made.
【单选题】以下哪项不属于非政府组织监督管理应遵循的原则?()
【单选题】She was worried that he might have _______ an accident.
【单选题】He is doubtful about the decision she has made.