产品创意
参考答案:
是指企业从自己的角度考虑能够向市场提供的可能产品的构想。
— ____________ is the school from the post office?
— It's about three kilometers away. [ ]
A. How many
B. How far
C. How much
焊工在离地面()m以上的地点进行焊接,即为登高作业。
A.1
B.2
C.5
D.10