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【单选题】
长期发热是指发热时间超过A.
1
B.
2
C.
3
D.
4
E.
2个月
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【简答题】_________________________________should be stowed under the seat as quickly as possible and________________ clear for others to be seated.
【单选题】If the price of oak lumber increases, what happens to consumer surplus in the market for oak cabinets?
A.
a. Consumer surplus increases.
B.
b. Consumer surplus decreases.
C.
c. Consumer surplus will not change consumer surplus; only producer surplus changes.
D.
d. Consumer surplus depends on what event led to the increase in the price of oak lumber.
【简答题】TDD 双工方式相比FDD具有如下优势
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