【判断题】在晶闸管的电流上升到其维护电流后,去掉门极触发信号,晶闸管仍能维持导通。〔 〕
【简答题】l Rewrite the following sentences by following the Three Cs Principles of business writing. 1. He went to
the fair for the purpose of finding a partner. 2. We plan to
give consideration to the idea at...
【简答题】terms of payment 2. date of shipment 3. We feel satisfied with your duplicate samples. 4. We are happy to receive your Purchase Order No. 13-415. 5. We will wire 30% of the total val...
【简答题】试题编号: J1-25 《网上训练平台》关键算法 ( 1 )任务描述 某学校软件技术专业的老师为训练学生编程逻辑和编程思维,决定开发一个网上训练平 台,供学生课后进行编程训练。学生可以使用系统提交程序并由系统对程序的正确性进行判 定。为实现该系统,需要提供大量的练习题及对应的程序。请完成以下的任务。 任务一:实现小球反弹问题关键算法并绘制流程图( 30 分) 一个球从 100 米高度自由落下,每次...
【单选题】We are in receipt of your enquiry of Sept. 5, _______ which we replied by fax this morning.