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【单选题】
下面有关程序计数器PC的叙述中,错误的是【 】。A.
在指令顺序执行时，PC的值总是自动加上当前指令的长度
B.
PC的位数一般和存储器地址寄存器MAR的位数一样
C.
在执行转移型指令时，PC的值一定被修改为目标指令的地址
D.
PC用来存放下一条将要执行的指令的地址
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举一反三
【简答题】用所给动词的适当形式填空 1. I prefer _____(stay) at home to _____(go) out on Sunday. 2. She asked me if I _____(go) to the park with her the next week. 3. At the gate of the school there are a lot of people _____...
【单选题】She asked me if I remembered ______ on holiday to Wales with her. Did I remember? It was one of the best holidays of my life!
A.
go
B.
to go
C.
going
D.
to going
【单选题】— What did Jane say to you last night? — She asked me .
A.
will I go to her party
B.
if I would go to her party
C.
that I would go to her party
D.
how would I go to her party
【单选题】有一混合蛋白质溶液,各种蛋白质的PI为4.6、5.0、5.3、6.7、7.3,电泳时欲使其中的4种蛋白质泳向正极,缓冲液的PH应该是
A.
4.0
B.
5.0
C.
6.0
D.
8.0
E.
7.0
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