The History of Eldertree CosmeticsEarly days1. The company was established in ______ by Olivia Jenkins.2. Her products sold well because of the ______ of natural products.3. In order to satisfy demand, the owners had to find ______ in 1977. The 1980s4. The introduction of new products resulted in the ______ of the business.5. By recruiting professional expertise, the company managed to secure ______ with major UK retailers.6. To support further growth, Eldertree needed both of a bigger ______ company.7. In 1987 the company was acquired by Greenaway, the UK’s largest ______.8. To improve productivity, Greenaway decided to build a ______ in 1988.9. Greenaway also decided to keep Eldertree’s ______ for its products.EIdertree Cosmetics today10. Greenaway has centralised functions such as its ______.11. In spite of its increased size, the company has kept a ______.12. In the last decade Eldertree has become a ______ both at home and abroad. 9()
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设A,B,A+B均可逆,则(A+B)-1=()。
A. (A-1+B-1)-1
B. A-1(A-1+B-1)-1A-1
C. B-1(A-1+B-1)B-1
D. A-1(A-1+B-1)-1B-1
The History of Eldertree CosmeticsEarly days1. The company was established in ______ by Olivia Jenkins.2. Her products sold well because of the ______ of natural products.3. In order to satisfy demand, the owners had to find ______ in 1977. The 1980s4. The introduction of new products resulted in the ______ of the business.5. By recruiting professional expertise, the company managed to secure ______ with major UK retailers.6. To support further growth, Eldertree needed both of a bigger ______ company.7. In 1987 the company was acquired by Greenaway, the UK’s largest ______.8. To improve productivity, Greenaway decided to build a ______ in 1988.9. Greenaway also decided to keep Eldertree’s ______ for its products.EIdertree Cosmetics today10. Greenaway has centralised functions such as its ______.11. In spite of its increased size, the company has kept a ______.12. In the last decade Eldertree has become a ______ both at home and abroad. 8()
The History of Eldertree CosmeticsEarly days1. The company was established in ______ by Olivia Jenkins.2. Her products sold well because of the ______ of natural products.3. In order to satisfy demand, the owners had to find ______ in 1977. The 1980s4. The introduction of new products resulted in the ______ of the business.5. By recruiting professional expertise, the company managed to secure ______ with major UK retailers.6. To support further growth, Eldertree needed both of a bigger ______ company.7. In 1987 the company was acquired by Greenaway, the UK’s largest ______.8. To improve productivity, Greenaway decided to build a ______ in 1988.9. Greenaway also decided to keep Eldertree’s ______ for its products.EIdertree Cosmetics today10. Greenaway has centralised functions such as its ______.11. In spite of its increased size, the company has kept a ______.12. In the last decade Eldertree has become a ______ both at home and abroad. 7()
设α=[α1,α2,α3]T,β=[b1,b2,b3]T,A=αβT,则An=()。
A. (a1b1+a2b2+a3b3)nA
B. (a1b1+a2b2+a3b3)n-1A
C. (a1b1+a2b2+a3b3)n-1A
D. (a1b1+a2b2+a3b3)An-2