【判断题】被测要素遵守最大实体要求时,当被测要素达到最大实体状态时,若存在几何误差,则被测要素不合格。( )
【单选题】In many African and Asian cultures, avoidance of eye contact can indicate respect rather than discomfort or a lack of interest. This example illustrates the importance of ________.
【单选题】服用硫酸亚铁治疗缺铁性贫血时,患者不宜大 量食用脂肪性食物是( )
【判断题】In the United States and in many parts of Europe, direct eye contact is considered as a means to express interest, to indicate trust in the other person and to convey openness.
【单选题】在零件模块中,要得到一个与当前模型不存在几何从属关系的镜像模型,应选择( )
【单选题】物体放在凸透镜前适当位置能在屏上得到一个清晰的像,如果把屏拿开,则( )
【简答题】自由度计算公式为 ,如题图(与第1题图同)所示机构的自由度为 。