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【单选题】
Lisa spends all her income on pizzas and DVDs. The above table shows Lisa's marginal utility for pizza and marginal utility for DVDs. If the price of a pizza is $10, the price of a DVD is $5, and Lisa has $40 to spend on the two goods, what combination of pizza and DVDs will maximize her utility?A.
6 DVDs and 1 pizza
B.
4 DVDs and 2 pizzas
C.
2 DVDs and 3 pizzas
D.
5 DVDs and 4 pizzas
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【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】单片机部分控制电路如图,编程实现发光二极管按D1D2---D3D4----D5D6----D7D8--D5D6---......D1D2----循环点亮。请在横线上填空,完成程序 解: #include void delay(){ ; for(i=0;i>2|0xc0); delay(); }}}
【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】翻译：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。
【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】马致远的《天净沙·秋思》：“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。”采用了何种抒情方式( )。
A.
借助描写抒情
B.
直抒胸臆
C.
借助议论抒情
D.
借助叙述抒情
【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。
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