单项选择题
Electrical energy may be divided into two components () as positive and negative.
A. distinguished B. specified C. separated D. indicated
单项选择题 下列关于劳务派遣的说法,不正确的是()
单项选择题 企业中层管理人员的培训目标不包括()
单项选择题 A:Hello.Could I speak to Linda?B:Speaking.A:().