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NP
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考题
The sentence that has a NP and a VP can be shown in a _______ formula "S →NP VP".
A hierarchicalB linearC treediagramD vertical
考题
The notion of NP-completeness has provided a(66)mathematical definition for(67)intractability of NP problems. But this measure applies only to worst-case complexity. Being NP-complete does not(68)that a problem is intractable on the average case. Indeed, some NP-complete problems are "(69)on average", though some may not be. Levin initiated the study of average-case intractability, He showed that a bounded tiling problem under a simple distribution is average-case NP-complete. Since then, several additional average-case NP-complete problems have been shown within Levin's(70). This paper is intended to provide a comprehensive survey of average-case NP-complete problems that have been published so far, and the techniques of obtaining these results.A．relaxedB．roughC．rigorousD．feasible
考题
______ offers a detailed description of tidal theory and its application to the analysis and prediction of tides and tidal streams．A.Ocean Passages for the World（NP136）B.Admiralty Tidal Stream AtlasesC.Admiralty Manual of Tides（NP120）D.Admiralty Tidal Handbooks（NP122 1-3）
考题
如果想创造一个随机10*10的矩阵可以用以下那行代码实现：A. np.random.rand(size=(10))
B.np.random.rand(size=(10, 10))
C.np.random.random(size=(10))
D.np.random.random(size=(10, 10))
考题
创建一个范围在(0,1)之间的长度为12的等差数列:A.np.linspace(0, 12)
B.np.linspace(1, 12)
C.np.linspace(1, 2, 12)
D.np.linspace(0, 12, 1)
考题
满足下面（）条件时，可以认为抽样成数的概率分布近似正态分布。A.n≥30，np≥5，n(1-P)≥5
B.n≥30，np≤5，n(1-P)≤5
C.n≥30，np≥5，n(1-p)≤5
D.n≥30，np≤5，n(1-P)≥5
考题
The sentence that has a NP and a VP can be shown in a （） formula “S→NP VP”.AhierarchicalBlinearCtree diagramDvertical
考题
反映人群健康状况常用的社会学指标有（）A、G.NP、就业率、婴儿死亡率B、G.NP、成人识字率、婴儿死亡率C、G.NP、成人识字率、社会保障率D、G.NP、社会保障率、婴儿死亡率E、G.NP、人均国民收入、社会保障率
考题
单选题The sentence that has a NP and a VP can be shown in a （） formula “S→NP VP”.A
hierarchicalB
linearC
tree diagramD
vertical
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