皮皮学，免费搜题
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【单选题】
We’d like to sit by the window.A.
我们想要坐在窗边。
B.
我们想要坐在无烟区。
C.
我们想要坐在包厢里。
D.
我们想要坐在中间。
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皮皮学刷刷变学霸
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【简答题】若集合A={1，x 2} ，集合B={1，3，x}，且A∪B={1，3，x}，则x=______．
【简答题】若集合A={x|x 2 -1＜0}，集合B={x|x＞0}，则A∩B=______．
【简答题】It involves getting the right to the right at the right , in the right and at the right , at the lowest total cost possible.
【单选题】Buying the right products, at the right price, from the right source, at the right specifications, in the right quantity, for delivery at the right time to the right internal customer is associated wi...
A.
managing the supply base
B.
managing the purchasing process effectively and efficiently
C.
supporting operational requirements
D.
supporting organizational goals and objectives
【简答题】In China, traffic keeps to the right. Cars, trucks, buses bikes must all keep to the right side of the . In most other countries, traffic to the left. How can you the roads safer? you cross the road, ...
【简答题】若集合A={x|log a （x 2 -x-2）＞2，a＞0且a≠1}． （1）若a=2，求集合A； （2）若 9 4 ∈A ，求a的取值范围．
【简答题】若全集U=R，集合A={x|x＞1}，B={x|x＞2}，则集合A∩（? U B）=______．
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