商场有电视机m台,每台进价为a元,售价b元,若全部出售,共可获利______元.
(b-a)×m=m(b-a)(元),
答:共获利m(b-a)元,
故答案为:m(b-a).
— How do you like Robie?
— He has been trying hard at his subjects.________ he is an excellent student.[ ]
A. No wonder
B. No problem
C. No excuse
D. No doubt
沿墙敷设的接户线和室外进户线最小线间距离一般不小于()mm。
A.50
B.100
C.150
D.200