题目

How to Order Coffee at StarbucksLearning how to order coffee at Starbucks can be tricky, and if you think that ordering coffee at Starbucks is confusing, you are not alone.【1】Things move quickly as their employees try to serve customers as efficiently as possible. Orders are generally taken at one of the cash registers. You will be asked for your first name, which you should state clearly. 【2】. Don't be offended if they spell your name incorrectly. People who have unique or hard — to — spell names will sometimes use an easy 'Starbucks' name when ordering, like Mike or Amy.【3】 T某人将一箱书搬上楼，可以有两种方法：一是把所有的书一起搬上楼；二是先搬一部分书上楼，再搬其余的部分。假设他上楼的速度相同，则两种方法搬书对书做的功W1_____W2，他做功的功率P1_____P2，机械效率η1_____η2。（大于/小于/等于）