【简答题】单片机部分控制电路如图,试编写控制程序实现发光二极管按D1D2---D2D3----D3D4----D4d5----D5D6----D6D7----D7D8--D1D2----循环点亮。(15分) 解: #include void delay(){ int i=0; for(i=0;i<=20000;i++); } void main(){ unsigned char j=0 // 点亮D1...
【多选题】Which of the following statements about response letters to requests for free products is/are true?
A.
It is bad news to a manufacturer that a potential customer requests for free products.
B.
The manufacturer is normally unwilling to provide free products to a prospective customer.
C.
In a positive response,you should specify the number of the free products you are offering and the time of delivery.
D.
In a negative response, you should state politely why you are unable to follow the request and encourage the receiver to make a purchase or take some action.
【简答题】The advance
reservationist belongs to the Front Office Department. He/She works at the Front Desk by the lobby. His /Her responsibility includes
answering questions concerning reservations ,
booking a...
【简答题】单片机部分控制电路如图,试编写控制程序实现发光二极管按 D1D2---D2D3----D3D4----D4d5----D5D6----D6D7----D7D8--D1D2---- 循环点亮。( 15 分) 解: #include void delay(){ int i=0; for(i=0;i<=20000;i++); } void main(){ unsigned char j=0 //点...
【单选题】“枯藤老树昏鸦,小桥流水人家,古道西风瘦马,夕阳西下,断肠人在天涯”这首曲的作者是()
【简答题】枯藤老树昏鸦,( ),古道西风瘦马。夕阳西下,断肠人在天涯。
【简答题】列举几种常见的静态图像文件格式,以及适用的场合。
【简答题】Discuss with your classmates whether there are any problems in the following letters and how you can improve them.Then contrast your improved letters with the original ones. To whom it may concern: I ...