56×48=40;
12×23=8;
故答案为:40,8.
How thoughtful of him () to make all the necessary arrangements for us!
A. he is
B. it was
C. is he
D. was he
在构成CRH1整节编组的3个动力单元TBU中()。
A、TBU1和TBU2完全对称
B、TBU1,TBU2,TBU3均不对称
C、TBU1和TBU3完全对称
D、TBU2和TBU3完全对称