如果风险的市值保持不变，则无风险利率的上升会 ( )
A．使SML的斜率增加
B．使SML的斜率减少
C．使SML平行移动
D．使SML旋转
参考答案：C
Alien said that his trip was _______.
A．interested
B．interest
C．interesting
D．of interest
单路电源的THDS探测站须配备（）在线式UPS不间断电源。
A.4h
B.8h
C.2h
D.10h
