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【单选题】
(13)某工程2013年签合同,2014年相对于2013年的材料综合物价指数为110%,2015年相对于2014年的材料综合物价指数为132%。计算2015年1000万元材料费的实际结算价为( )万元。A.
1100
B.
1320
C.
1420
D.
1452
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A.
special
B.
strange
C.
important
D.
wrong
【单选题】与常规发电技术相比,光伏发电有很多优点。下面( )不是光伏发电系统的优点
A.
清洁环保，不产生公害
B.
取之不尽、用之不竭
C.
不存在机械磨损、无噪声
D.
维护成本高、管理繁琐
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