【判断题】运动竞赛是以争取优胜为直接目的、以运动项目为内容,根据规则的要求进行个人或集体的体力、技艺、心理的相互竞赛的过程。
【单选题】When are multimedia tools effective?
A.
When they involve technology.
B.
When they enhance your message.
C.
When they are colorful.
【单选题】载流导体周围的磁场方向与产生磁场的()有关。
【简答题】A.When they first arrive at a prison. B.When they are leaving the prison. C.When they behave themselves. D.When they break the rules.
【简答题】A.When they are born. B.When they are ten months old. C.When they are one year old. D.When they are two years old.
【简答题】阅读材料,回答问题。 如果把城市看作一个生命体,那么城市居民的日常交通出行就是让这个生命体得以发展、延续、壮大的血脉。电动车正是凭借其自身优势快速成为我国两轮交通的主体,成了饱受拥堵的城市居民的交通救星。在城市化和城镇化建设加快的过程当中,电动车是为大众提供了一种轻便且成本较低的交通方式,在城市中,电动车受交通拥堵的影响很小;在小城市和广大乡镇,电动车充电方便、容易驾驶,也是日常劳动中重要的工具之...
【简答题】A.When they are no longer useful. B.When they become ill. C.When they become escapees. D.When they get too old.
【判断题】在采用电流驱动方式的喷油器控制电路中,不需附加电阻值,直接与蓄电池连接。