生命周期成本LCC的特点是( )。
A．LCC的费用并不是只在初始投资时发生，而是在整个寿命周期内按时间序列发生的
B．为便于比较，要将各时间发生的费用统一折算成初始投资时的现值，因此必须考虑折现率即利率的影响
C．如果对设备和系统采用节能技术措施或加强管理，可以大大降低每年的EUAC，为采取这些措施所增加的投资也可以很快回收
D．以上全部正确
参考答案：D
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| On a cold November afternoon, my mother and l were walking home from a pizza store. We were dressed 1 and equipped with the rented video we had been dying for. I was feeling a little 2 ,as I was carrying our shopping bags of snacks and the 3 . They were so heavy that I decided to 4 some things.So I started to walk towards the garbage can when I noticed a poor man walking his 5 out of the restaurant in front of us. He 6 a paper bag with his dirty hand. He headed over to another nearby garbage can and started 7 it. I suddenly felt very 8 because I was about to do away with a new drink just 9 it was heavy. I knew this man would take all he could 10 ,so I walked up to him and 11 the drink and some snacks to him. The man looked up 12 and took what I gave him. A huge smile spread 13 his face and this caused me to feel indescribable 14 .1 felt like I 15 be happier with myself. But then he said , " This is my son's lucky day ! " With that, he 16 me happily and started off on his bike. I even heard him 17 a song as he rode away. I got a warm feeling inside and I knew I had done something good, for the man and his family. I now understand what is 18 by the saying"Giving is getting" . Since then,every time I have the 19 to do something nice,the image of the man's happiness caused by my small gifts appears in my mind. This is the 20 of charity. | ||||
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