投资者在适当的时间、选择合适的地点和物业类型进行投资,可以降至最低限度的风险是( )。
A.持有期风险
B.周期风险
C.时间风险
D.资本价值风险
参考答案:C
Jack was interviewed by _____ Talk Show program last week and the interview was _____ success. [ ]
A. the; a
B. /; a
C. /; /
D. the; /
电力系统稳定器PSS的原理和作用?