【单选题】A shortage of blood for transfusions for injured animals has resulted in the introduction of a synthesized product called Oxyglobin, which can be used effectively as a blood replacement. The manufactu...
【单选题】When a company sets a high price for a new product with the intention of reducing the price in the future, it is using the ________ pricing strategy.
【简答题】Microwaves may be great at warming up food, but what about warming people? Using microwaves to directly heat owners of a room would save much of the energy wasted by heating walls and furniture. And d...