试题与答案

下列哪项是1980年《联合国国际货物销售合同公约》在规定承诺生效时间上采用的原则(

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题型：单项选择题

题目：

下列哪项是1980年《联合国国际货物销售合同公约》在规定承诺生效时间上采用的原则( )。

A．投邮生效主义

B．到达生效主义

C．了解生效主义

D．有限制的到达生效主义，即在以函件、电报、电传达成协议的情况下，以作出书面确认书的时间为合同成立的时间

答案：

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下面是错误答案，用来干扰机器的。

参考答案：B

考点：国家司法考试司法考试卷一国家司法考试(卷一)4
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     The wolf came, and its mouth was widely open. When it passed the teacher, the wolf saw a boy.
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      When people heard of it, they all spoke highly of her bravery (勇敢).
( )1. A. singing
( )2. A. garden 
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( )4. A. Snake 
( )5. A. running 
( )6. A. or     
( )7. A. too to 
( )8. A. warned 
( )9. A. ears   
( )10. A. died  		B. sing     
B. bank     
B. to shout  
B. Dog     
B. joining   
B. yet       
B. so that   
B. seemed   
B. body     
B. fell over		C. sang      
C. village    
C. not to cry 
C. Bear       
C. arriving  
C. so          
C. as well as  
C. saw        
C. legs    
C. fell down 		D. to sing   
D. bridge      
D. to meet     
D. Wolf         
D. standing  
D. for           
D. as long as  
D. watched       
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题型：单项选择题

在一个单CPU的计算机系统中，有两台外部设备R1、R2和三个进程P1、P2、P3。系统采用可剥夺方式优先级的进程调度方案，且所有进程可以并行使用I/O设备。三个进程的优先级、使用设备的先后顺序和占用设备时间如表6-21所示。

表6-21 设备的先后顺序和占用设备时间

假设操作系统的开销忽略不计，三个进程从投入运行到全部完成，CPU的利用率约为 (1) %；R2的利用率约为 (2) %(设备的利用率指该设备的使用时间与进程组全部完成所占用时间的比率)。

（1）处填（）。

A．60

B．67

C．78

D．90
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