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【多选题】
关于指令,下面描述正确的是()
A.
指令是能被计算机识别并执行的二进制代码,它规定了计算机能完成的某一种操作。
B.
从结构上看,指令一般由操作码和操作数两部分组成,有一些指令只有操作码。
C.
一台计算机的所有指令的集合,称为该计算机的指令系统。
D.
不同类型的计算机,指令系统可能有所不同。
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参考答案:
举一反三
【简答题】A.choose B.use C.hold out D.pick out
【单选题】Owing to no hotel to book, I have to ______ with my friend during my visit to Swiss.
A.
lodge
B.
entertain
C.
register
D.
fulfill
【单选题】Who was the first to pick out eidos?
A.
Socrates
B.
Plato
C.
Aristotle
【单选题】One can ______ BBC _____ the air early with his Short-wave radio.
A.
pick up; on
B.
pick out; over
C.
pick up; through
D.
pick up; by
【单选题】下列化合物中,能构成蛋白质的氨基酸有 [     ]
A.
B.
C.
【单选题】It took Joan a long time to _______ a new dress at the store.
A.
pick up
B.
take up
C.
take out
D.
pick out
【单选题】蛋白质由氨基酸构成,常见构成蛋白质的氨基酸有 多少种?
A.
15
B.
20
C.
25
D.
30
【单选题】Only in this way _____ her boyfriend in the crowded street. [     ]
A.
she can pick out
B.
she can pick up
C.
can she pick out
D.
can she pick up
【单选题】Can you ________ your sister from that group of girls?
A.
pick up
B.
pick out
C.
bring up
D.
bring out
【简答题】构成蛋白质的氨基酸有( )种,必需氨基酸有( )种。
参考解析:
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