以下关于工作区的叙述中，哪个是正确的？A．一个工作区只能打开一个表B．一个工作区最多可以打开225

It is time we()computers to the production of iron and steel.

A. will apply

B. applied

C. have applied

D. would have applied

It is time that we ______ computers to the productions of iron and steel.

A．applied

B．will apply

C．have applied

D．would have applied

A: by

B: as

C: in

D: with

Charles Babbage, an English academic, ______.

A．tried to use computers in production processes

B．was one of the fathers of cost accounting

C．was the father of modem computers

D．tried a scientific production approach

From the passage, we know that ______.

A．today it is not very difficult nor painful to program parallel and vector computers

B．the major barrier preventing parallel processing from entering the production mainstream comes from hardware technology

C．we can build a new generation of computers adopting parallel processing by the rapid hardware progress

D．the application domains of parallel processing computers is expanding slowly

Charles Babbage, an English academic,______.

A．tried to use computers in production processes

B．first used computers in the area of cost accounting

C．was the father of modern computers

D．tried a scientific management approach

Charles Babbage, an English academic, ______.

A．tried to use computers in production processes

B．first used computers in the area of cost accounting

C．was the father of modern computers

D．tried scientific approaches to calculate the costs

Charles Babbage, an English academic,______.

A．tried to use computers in production processes

B．first used computers in the area of cost accounting

C．was the father of modern computers

D．tried scientific approaches to calculate the costs

Charles Babbage, an English academic,______.

A．tried to use computers in production processes

B．first used computers in the area of cost accounting

C．was the father of modern computers

D．tried a scientific management approach