【单选题】目前,计算机最具有代表性的应用领域有:科学计算、数据处理、实时控制、计算机网络及( )。
【单选题】What is the main reason that we cannot use all of the earth's water?
A.
A small amount of water is not for drinking.
B.
Most of it has been polluted.
C.
About 97 percent of it is seawater.
D.
Fresh water is still enough for us.
【简答题】棘轮机构从结构上可分为()和()棘轮机构
【多选题】计算机的应用领域主要有以下几方面( )。
【简答题】计算机网络应用的领域有:办公自动化; ;过程控制;Internet应用。
【单选题】“软件通”把所有软件按照应用领域的不同划分,正确的是? 1网页网站设计类,例如: (Flash 、 Firewroks) 2多媒体设计类,例如:(Authorware 、 Director) 3计算机程序语言类,例如:(VB、C++、Ada) 4计算机辅助设计类,例如:(Matlab) 5平面设计类,例如:(Photoshop、Illustrator 、CorelDRAW、PageMaker) 6...
【单选题】What is the main advantage of a rain barrel system?
A.
It benefits the Earth by recycling water.
B.
Its efficiency increases in areas with little rainfall.
C.
It utilizes technology that is centuries old.
D.
It results in lower utility payments.