问题
多项选择题
精确作战的主要特点是（）。
A.可以直接摧毁敌人重心
B.精确作战的作战节奏将明显加快
C.精确作战使战场生存问题变得至关重要
D.有效摧毁敌人有生作战力量
答案
参考答案：A, B, C
搜题请搜索小程序“爱下问搜题”
精确作战的主要特点是（）。
A.可以直接摧毁敌人重心
B.精确作战的作战节奏将明显加快
C.精确作战使战场生存问题变得至关重要
D.有效摧毁敌人有生作战力量
参考答案：A, B, C
We live in “computer age(时代)”. People like using computers to do ___21__work. But more than 20 years ago, ___22__couldn’t do much. They were very big and expensive. Very __23___people were interested in them and knew how to use them. Today computers are smaller and ___24___.Since they are useful, many people like to use them, even at home. Computers ___25___very important because they can work ___26___than men and make fewer mistakes. Computers can ____27___people do a lot of work. Writers can use computers to write. Teachers can use computers to help teaching and students use them to study. Computers can also remember what you put ___28____ them. Computers are very___29___. They are our good friends. Do you want to ___30____a computer.
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