试题与答案

减少指令执行周期数是RISC计算机性能提高的基础,它是通过 (17) 、指令控制部件

题型:单项选择题

题目:

减少指令执行周期数是RISC计算机性能提高的基础,它是通过 (17) 、指令控制部件 (18) 微代码、 (19) 寄存器、 (20) 寻址方式、限制访问内存来实现的。 (21) 都是与RISC芯片有关的名词。

A.SPARC和MIPS
B.SPARC和SCSI
C.FLOPS和MIPS
D.MIMD和EISA

答案:

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题型:阅读理解

Mary likes dogs very much. She has a pug-dog. It is white. It has big eyes and ears. It is small but it is cute and beautiful.

Every morning, the dog eats some bread and meat. They are the dog’s favorite food. When Mary goes to school, the dog always waits for(等待) her at the gate. When she comes back home, the dog follows her here and there. When Mary does her homework, it lies(卧) near her feet. When Mary watches TV, the dog sits on the sofa near her. When Mary goes to bed, the dog lies its bed next to Mary’s. in the evening, they often run and play in the yard (院子). They are really good friends. 

根据短文内容,选择正确答案。(1×5=5分)

小题1:Mary has a _____ dog.

A.white

B.black

C.yellow

D.red小题2:The pug-dog is very _______.

A.lazy and big

B. small and lazy

C.small and cute

D. big and beautiful小题3:The pug-dog’s favorite food are _______.

A.grass and leaves

B.fruit and fish

C.bread and meat

D.grass and meat小题4:The dog _____ when Mary watches TV.

A.follows her here and there

B.lies near her

C.sits on the sofa

D.lies on the bed小题5:Mary is a ______.

A.student

B.teacher

C.doctor

D.actor

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题型:实验题

(10分)某同学要测量一节干电池的电动势和内阻.他根据老师提供的以下器材画出了如图所示的原理图.

A.电压表V(15V,10kΩ)

B.电流表G(量程3.0mA,内阻Rg为10Ω)

C.电流表A(量程0.6A,内阻约为0.5Ω)

D.滑动变阻器R1(0~20Ω,10A)

E.滑动变阻器R2(0~100Ω,1A)

F.定值电阻R3=990Ω

G.开关S和导线若干

(1)该同学没有选用电压表是因为________;

(2)该同学将电流表G与定值电阻R3串联,实际上是进行了电表的改装,则他改装的电压表对应的量程是________V;

(3)为了能准确地进行测量,同时为了操作方便,实验中应选用的滑动变阻器是________(填写器材前的字母编号);

(4)该同学利用上述实验原理图测得以下数据,并根据这些数据绘出了如上图所示的图线,根据图线可求出干电池的电动势E=________V(保留3位有效数字),干电池的内阻r=________Ω(保留2位有效数字).

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