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问题 多项选择题

河务印书馆是我国最早的现代出版机构，1897年创立于上海，1954年迁至北京，1958年以后主要编译出版外国学术名著、编撰出版中外文工具书等，其代表性的为出版物有：

A．《商务印书馆文库》

B．《辞海》

C．《新时代汉英大词典》

D．《词源》

E．《现代汉语词典》

答案

参考答案：A,C,E

解析： 商务印书馆代表性出版物有《辞源》《现代汉语词典》《新华字典》《新时代汉英大词典》《商务印书馆文库》等。

单项选择题

In recent years, one of the more popular topics for panel discussions at computer conferences and trade (61) has been the "RISC versus CISC" debate.

RISC processors feature a small number of instructions that each executes in (62) machine cycle. CISC processors use complex instructions that can take several cycles to execute.

The RISC versus CISC debate won’t be decided by panel discussion; it will be won in the marketplace. And the deciding factor may have little to do with (63) of instructions and registers and more to do with parallelism.

Since their conception, RISC processors have been evolving toward micro parallelism, incorporating parallel-processing features (64) the processor, RISC processors feature pipelining, whereby many instructions can be decoded while one instruction executes. RISC processors, however, are moving toward pipelines for each unit of the processor.

CISC processors also employ pipelining. They have many integer instructions that execute in one cycle, but the varying execution times of CISC instructions (65) the effectiveness of parallelism.

（61）处是（）

A.union

B.twoC.numbers

D.between

E.limit

F.contents

G.shows

H.one

I.within

J.enhance
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问答题 简答题

什么叫灯具的效率，怎样提高灯具的效率？
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