只追求质量，认为“酒香不怕巷子深”，是( )。
A．生产观念
B．产品观念
C．市场营销观念
D．推销观念
参考答案：B
如何控制受力螺栓的预紧力？
Many road accidents occurred because motorists could not ________ the speed of approaching vehicles.[ ]
A. conclude
B. count
C. measure
D. value
