有明确规章,成员地位和角色、权利和义务都很清楚,并具有稳定、正式编制的群体是指()。 发布时间:2019-01-10 21:25 │ 来源:www.tikuol.com 题型:单项选择题 问题: 有明确规章,成员地位和角色、权利和义务都很清楚,并具有稳定、正式编制的群体是指()。A.参照群体B.成员群体C.非正式群体D.正式群体
题型:单项选择题 电位函数φ=2(x2+y2)+4(x+y)+10V,则场点A(1,1)处的场强E为()。A.10V/mB.6ex+6eyV/mC.-8ex-8eyV/mD.-12ex-10V/m 查看答案
题型:单项选择题 Helen had to shout ________ above the sound of the music. [ ]A. making herself hear B. to make herself hear C. making herself heard D. to make herself heard 查看答案