Ann has a wheelchair that was ___ designed for her.
A.specially
B.especially
C.special
D.especial
A.specially
B.especially
C.special
D.especial
A.considerate
B.precise
C.delicate
D.accurate
A.than to go
B.more than going
C.rather than to go
D.than going
设A是一n级下三角形矩阵,证明:
1)如果aii≠ajj当i≠j,i,j=1,2,...,n,那么A相似于一对角矩阵;
2)如果a11=a22=...=ann,而至少有一,那么A不与对角矩阵相似。
A.Osgood's term of employment is longer han that of any other work
B.no other employee has worked in the factory as long as Osgood
C.the factory has no employee who has worked as long as Osgood
D.Osgood has worked at the factory longer than any other employee
A.It’s as white as snow
B.It has a long neck
C.It has a brass stomach
D.It eats firewood