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【单选题】
On the National Day, up _____ into the air. Then the crowed cheered.A.
the balloons went
B.
went the balloons
C.
go the balloons
D.
did the balloons go
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【简答题】Pareto规则
【简答题】Pareto规则(名词解释)
【单选题】If our model of rent control allowed for unrestricted subletting, would the outcome be Pareto efficient?
A.
Pareto efficient
B.
Pareto inefficient
【单选题】VThe Pareto Principle is a technique used to determine which quality control problems in a particular process should be corrected. Which of the following statements best represents the philosophy empl...
B.
. the majority of defects are caused by a small percentage of the identifiable problems. Improvement efforts should be reserved for these vital problems.
C.
. in order to achieve zero defects, all quality control problems, including those which do not have a direct financial cost should be corrected.
D.
. generally, 80% of the quality control problems are justifiable for correction via cost-benefit analysis. The remaining 20% are not financially worthy of improvement efforts.
E.
. A and
【多选题】鉴别笔记本电脑样机和翻新机的方法有哪些？
A.
仔细观察键盘缝隙出风口和屏幕边框中有没有较多的灰尘
B.
检查键盘键帽和鼠标是否有磨损的痕迹
C.
拆下电池，检查被电池盖住的机器背面有没有指纹
D.
检查笔记本电脑出厂序列号
【单选题】卷积积分:t【u(t)-u(t-2)】*δ(1-t)=()
A.
（t-1）【u（t-1）-u(t-3)】
B.
(t-1)u(t)
C.
-【u（t-1）-u（t-3）】
D.
tu（t）
【单选题】帕累托前沿 Pareto frontier 是( )
A.
一条曲线
B.
所有帕累托最优解Pareto Optimal Solution的组合
C.
一个曲面
D.
其余选项都不正确
【简答题】计算下列信号的卷积积分。 f1(t)=e－2tu(t)，f2(t)=u(t)
相关题目：
【单选题】卷积积分:t【u(t)-u(t-2)】*δ(1-t)=()
A.
（t-1）【u（t-1）-u(t-3)】
B.
(t-1)u(t)
C.
-【u（t-1）-u（t-3）】
D.
tu（t）
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