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-------He says that my new car is a ____________ of money.-------Don’t you think those words are just sour grapes?A. lack B. load C. question D. wast
------- What is the price of petrol these days-------Oh, it ______ sharply since last month.A. is raisedB. has risenC. has arisenD. is increased
文中( 3 )处正确的答案是( )。A.A-B-FB.A-B-C-E-F-DC.A-E-CD.A-E-C-B-F-D
A.-(1-2-23)×27B.(1-2-23)×(27-1)C.-(1-2-24)×27D.-(1-2-23)×(27-1)
设A,B,C为同阶可逆方阵,则(ABC)-1=( )A. A-1B-1C-1 B. C-1B-1A-1C. C-1A-1B-1 D. A-1C-1B-1