【单选题】下列说法错误的是()
C.
具有体心立方晶格的金属,如碳素钢和低合金钢,都会低温变脆。
【单选题】The histogram of returns data for the Accel Equity Fund has a long left tail and is more peaked than a normal distribution.. Based on the histogram, the distribution of returns for Accel has:
C.
negative excess kurtosis
【单选题】For the histogram of an image as shown, if we want to perform histogram equalization, s(3) should be ( )
【单选题】The suggested interval size of the class intervals for a histogram can be estimated by:
A.
consecutive lower class limits divided by 2
B.
consecutive lower class limits divided by the total number of observations.
C.
using the formulas: i>(H-L)/K
D.
consecutive lower class limits divided by the number of frequencies in each class.
【判断题】企业应当建立会计档案管理制度,不论会计资料以何种载体形式进行储存,都应该归档管理,应当遵循国家有关会计档案管理的规定。
【判断题】钛在常温下的晶体结构为体心立方晶格。 2.钛合金具有优良的生物相容性,是非常理想的医用金属材料。