【单选题】There's a man at the reception desk who seems very angry and I think he means ______ trouble.
【多选题】吉林省,简称______,省会城市______。
【简答题】凸轮机构从动件常用的运动规律有 、 、 、 。
【简答题】Java 中成员变量用于描述对象的特征,也被称作【 】。
【单选题】There's a man at the reception desk who seems very angry and I think he probably means ______trouble.
【简答题】凸轮机构中从动件常用的运动规律有 、 、 。