天然气发电厂运行培训知识竞赛
相似问题和答案
第1题：
A.1Np=8.686dB
B.1dB=8.686Np
C.1Np=0•1151dB
D.ldB=4.343Np
第2题：
B.np.random.rand(size=(10, 10))
C.np.random.random(size=(10))
D.np.random.random(size=(10, 10))
第3题：
A.NP问题都是不可能解决的问题
B.P类问题包含在NP类问题中
C.NP完全问题是P类问题的子集
D.NP类问题包含在P类问题中
第4题：
使用正态近似法进行总体率可信区间估计的条件为( )
- A、np＞5
- B、n＞5
- C、np＞5或n(1-p)＞5
- D、np＞5且n(1-p)＞5
正确答案:D
第5题：
The sentence that has a NP and a VP can be shown in a （） formula “S→NP VP”.
Ahierarchical
Blinear
Ctree diagram
Dvertical
B
略
第6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．relaxed
B．rough
C．rigorous
D．feasible
第7题：
B.np.linspace(1, 12)
C.np.linspace(1, 2, 12)
D.np.linspace(0, 12, 1)
第8题：
A hierarchical
B linear
C treediagram
D vertical
第9题：
NP狼疮
正确答案:有25％的系统性红斑狼疮患者累及中枢神经系统，尤以累及脑多见，故称由此器官受累者为神经精神狼疮（neuropsychiatriclupus，NP狼疮）。常表现为头痛、呕吐、偏瘫、癫痫、意识障碍、或为幻觉、妄想、猜疑等各种精神障碍症状。有NP狼疮表现均为病情活动者。
第10题：
二轴晶宝石光线垂直光轴方向入射时，两折射率值最可能是：（）
- A、Ng、Np
- B、Ng、Nm
- C、Np、Nm
- D、Ng’和Np’
正确答案:D