[多选]
Given:

Which two methods, inserted independently at line 17, correctly complete the Sales class?（）

A . double getSalesAmount() { return 1230.45; }
B . public double getSalesAmount() { return 1230.45; }
C . private double getSalesAmount() { return 1230.45; }
D . protected double getSalesAmount() { return 1230.45; }

An administrator has a legacy cluster running version 4.5/ES and would like to update to version 5.5.Which of the following is a valid upgrade path？（） 1. Upgrade from 4.5 to 5.12. Upgrade from 5.1 to 5.5。 1. Upgrade from 4.5 to 5.22. Upgrade from 5.2 to 5.5。 1. Upgrade from 4.5 to 5.32. Upgrade from 5.3 to 5.5。 1. Upgrade from 4.5 to 5.4.12. Upgrade from 5.4.1 to 5.5。学情分析是教师重建（）的必然要求，也是提高课堂教学有效性的前提保障，还是提升教师实践研究能力的基本途径。爱立信公司曾因上游企业——飞利浦芯片厂的火灾而陷入危机，被迫退出手机生产领域。这次危机属于（）。供应危机。宏观环境制约型危机。品牌危机。产品质量危机。中国城市化的基本特征。旁站是监理人员在现场对关键部位或关键工序施工进行的（）活动。 A.全过程监督。 B.监督。 C.现场监督。 D.巡视。

Given:

Which two methods, inserted independently at line 17, correctly complete the Sales class?（）

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[多选] Given: Which two methods, inserted independently at line 17, correctly complete the Sales class?（）

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[多选]
Given:

Which two methods, inserted independently at line 17, correctly complete the Sales class?（）