中年人心理卫生保健中并不强调的是()
A.确立生存意义
B.适度锻炼运动
C.加强学习能力
D.加强人际交往
E.保持平和心态
参考答案:C
The moment the bell rings for dinner, there are always a great number of students _____ into the dining hall as if they hadn’t had meals for days.
A.come walking
B.coming walking
C.coming flooding
D.come flooding
工程经济分析时要将有这个项目和没有这个项目时的现金流量情况进行对比,指的是()
A.可比性原则
B.现金流量原则
C.增量分析原则
D.有无对比原则