霍兰德认为知道我们自身最感兴趣职业的人是：

A、B-F算法

B、距离矢量路由算法

C、链路状态路由算法

D、Dijkstra算法

A、铸铁

B、铝合金

C、黄铜

D、碳钢

From the same survey referred to in Pronblem 1, Table 5.11 cross-classi?es whether a person smokes frequently with the four scales of the MBTI personality test. SAS reports model?2 log likelihood values of 1130.23 with only an intercept term, 1124.86 with also the main effect predictors, 1119.87 with also all the two-factor interactions, and 1116.47 with also all the three-factor interactions. a. Write the model for each case, and show that the numbers of parameters are 1, 5, 11, and 15. b. According to AIC, which of these four models is preferable? c. When a classi?cation table for the model containing the four main effect terms uses the sample proportion of frequent smokers of 0.23 as the cutoff, sensitivity = 0.48 and speci?city = 0.55. The area under the ROC curve is c =0.55. Does knowledge of personality type help you predict well whether someone is a frequent smoker? Explain.

A、不同组分在不同相（或体系）中的质量分数；

B、同一组分在不同相（或体系）中的质量分数；

C、不同组分在同－相（或体系）中的质量分数；

D、以上说法均不正确。

A、棱镜分光

B、彩虹

C、焰色反应

D、极光

A、

B、

C、

D、