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【单选题】
我国工业标准筛号常用目表示A.
每厘米长度内所含筛孔的数目
B.
每平方厘米面积内所含筛孔的数目
C.
每英寸长度内所含筛孔的数目
D.
每平方英寸面积内所含筛孔的数目
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知识点：
皮皮学刷刷变学霸
举一反三
【简答题】3 假设 w 1 (0)=0.2, w2(0)=0.4, θ (0)=0.3, η =0.4 ,请用单层感知器完成逻辑或运算的学习过程。
【简答题】Symptoms can include: Fever Cough Shortness of breath 这三个症状的中文表述为?
【简答题】Symptoms of empty nest syndrome can include depression, a sense of loss of purpose, worry, stress, and anxiety over the child’s welfare. →Besides the harm done to the immune system, empty nest syndrom...
【单选题】患儿女,岁,肺炎。今日突然出现烦躁不安、呼吸困难、发绀,呼吸 65 次/分,心率160 次/分,右肺叩诊鼓音,听诊呼吸音减低,肝肋下 2.5 cm, 胸片示纵膈向左移位,护士判断该患儿最可能发生了( )
A.
脓胸
B.
肺不张
C.
心力衰竭
D.
气胸
E.
支气管异物
【简答题】假设在某个地区细胞识别中正常（w 1 ）和异常（w 2 ）两类先验概率分别为P（w 1 ）=0.8，P（w 2 ）=0.2，现有一待识别的细胞，其观察值为x，从类条件概率密度分布曲线上查得P（x/w 1 ）=0.25，P（x/w 2 ）=0.6，并且已知λ 11 =0，λ 12 =6，λ 21 =1，λ 22 =0。请分析两种结果的异同及原因。
【单选题】It can be difficult to know if you are suffering from the common cold, or the flu. Each can cause fatigue and weakness. Symptoms for each can include a stuffy nose, sneezing, sore throat, chest discom...
A.
However, a cold sufferer rarely has a high fever, or headache, nor does a cold suffer experience extreme exhaustion from his malaise
B.
However, both of them can make you feel miserable.
C.
Antiviral medications may be prescribed by your doctor for the flu.
D.
The flu’s complications are more serious than those from a cold, and could even turn out to be life threatening.
【单选题】About 10% of the human population (and up to 50% of people in impoverished communities) suffers from folic acid deficiency. When the deficiency is severe, the symptoms can include heart disease, cance...
A.
A
B.
T
C.
U
D.
G
【简答题】假设 w 1 (0)=0.2, w 2 (0)=0.4, θ (0)=0.3, η =0.4 ,请用单层感知器完成逻辑或运算的学习过程。
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