(-2a2)•(3ab2-5ab3)+8a3b2.
原式=-6a3b2+10a3b3+8a3b2
=2a3b2+10a3b3.
Has it been warned that all the children in this area stay at their homes until the Flu has been controlled ?
A.can
B.will
C.may
D.shall
对公文进行阅读、贯彻执行和办理,使公文产生实际效用,属于公文处理环节中的。
A.拟办
B.批办
C.承办
D.注办