更多"Computer date base and electronic m"的相关试题:
[单项选择]Computer data bases and electronic mail systems have been around since the late 1970s.
A. 计算机数据库和电子邮件自20世纪70年代末，便无处不在了。
B. 20世纪70年代后期以来，计算机数据库和电子邮件系统已被广泛使用。
C. 20世纪70年代末，计算机数据基础和电子邮递系统就已经在大家周围了。
D. 在20世纪70年代后期，计算机数据库和电子邮件已普及了。
[单项选择]With the introduction of the electronic computer, there is no complicated problem （ ） can be solved quickly.
A. that
B. which
C. but
D. as
[单项选择]The speed with which an electronic computer works depends on its______.
A. electronic circuits
B. programmer
C. vacuum tubes, or transistors
D. instructions
[单项选择]Today the electronic computer is used in solving mathematical problems having to do with weather forecasting and putting satellite into orbit(轨道)．
A. 今天电子计算机应用于解决一些数学问题，这些问题不得不处理天气预报和把卫星送入轨道。
B. 今天电子计算机被用于解决数学问题，这些问题与天气预报和把卫星送入轨道有关。
C. 今天电子计算机不得不被用于解决天气预报和把卫星送人轨道一类的数学问题
D. 今天电子计算机利用解决数学问题的方法处理天气预报和把卫星送人轨道等问题。
[单项选择]The electronic computer is（ ） some of the tasks that were once accomplished by our own brains.
A. taking care
B. taking in
C. taking off
D. taking over
[单项选择]Electronic computer has ______ greatly social economy and life.
A. transferred
B. transformed
C. transported
D. translated
[单项选择]The electronic computer is ______ some of the tasks that were once accomplished by our own brains.
A. taking care
B. taking in
C. taking off
D. taking over
[单项选择]The electronic computer is ______some of the tasks that were once accomplished by our own brains.
A. taking on
B. taking over
C. taking off
D. taking in
[单项选择]A computer is a fast electronic machine------information according to a stored sequence of instructions called a program.
A. processes
B. that processes
C. that it processes
D. that processes it
[单项选择]HAV的主要传播途径是
A. 母婴垂直传播
B. 吸血昆虫叮咬
C. 呼吸道传播
D. 消化道传播
E. 泌尿生殖道传播
