设矩阵Am×n的秩R______ =r,Pm×m<br/>, Qn×n是可逆矩阵,则R______ =______
设矩阵Am×n的秩R______ =r,Pm×m<br/>, Qn×n是可逆矩阵,则R______ =______
半径为R、带电量为Q的球壳,P点距离球心的距离为r。当r>R时,P点的电势是______ <br/>当r______
半径为R、带电量为Q的球壳,P点距离球心的距离为r。当r>R时,P点的电势是______ <br/>当r______
1 r______爱情，恋爱
1 r______爱情，恋爱
分别写出下列前提推出的结论(1) ┐p∨q, q→r, ┐r______ (2) p∨q, p→r, q→s______ (3) ┐p→q, p→r, r→s______ (4) p, ┐p∨r, ┐r∨s______ A.s B.p C.r∨s D. ┐p E.q∨s F. ┐r G.r→s H.r→p
分别写出下列前提推出的结论(1) ┐p∨q, q→r, ┐r______ (2) p∨q, p→r, q→s______ (3) ┐p→q, p→r, r→s______ (4) p, ┐p∨r, ┐r∨s______ A.s B.p C.r∨s D. ┐p E.q∨s F. ┐r G.r→s H.r→p
r______ come up with sudden laughter
r______ come up with sudden laughter
He is r______(恭敬的) to his elders.
He is r______(恭敬的) to his elders.
8) r______ bring back to a former condition
8) r______ bring back to a former condition
6) r______ depend confidently, put trust in
6) r______ depend confidently, put trust in
With a chemical r______, a new substance can form.
With a chemical r______, a new substance can form.
R______(关于) the punishment, what would you advise?
R______(关于) the punishment, what would you advise?