问题
单项选择题
机器设备的经济寿命是指( )。
A．机器设备从使用到报废为止的时间
B．机器设备从使用到运营成本过高而被淘汰的时间
C．从评估基准日到设备继续使用在经济上不合算的时间
D．机器设备从使用到出现了新的技术性能更好的设备而被淘汰的时间
答案
参考答案：B
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机器设备的经济寿命是指( )。
A．机器设备从使用到报废为止的时间
B．机器设备从使用到运营成本过高而被淘汰的时间
C．从评估基准日到设备继续使用在经济上不合算的时间
D．机器设备从使用到出现了新的技术性能更好的设备而被淘汰的时间
参考答案：B
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| Radio, telephone and television are widely used in the world. When you 1 the radio, you can listen. But when you use the telephone, not only you can listen to others 2 you can talk with them; however, you 3 see anything at all. Television is much better than 4 of them. People can watch TV and listen to it. But they can't take part in 5 they see. Today some people are using a kind of telephone called the picture phone or vision phone. 6 it two people who are talking can see each other. Picture phone can be very 7 when you have something to show the person you are calling. They may have other uses in the future. Some day you may be able to 8 a library and ask to read a book right over your picture phone. You may also be able to go shopping through it, too. When you 9 something in the newspaper that you think you want to buy, you may go to your picture phone and call the shop. The shop assistant will show you the thing that you're 10 in right over the phone. You'll be able to shop all over the town and never leave your home. | ||||
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