下列选项不属于影响设备购买的主要因素的一项是( )。
A.设备的经济寿命B.项目的寿命期C.技术过时风险的大小D.设备的价格
参考答案:D
— Sam hasn't come yet.
— He likes to watch football match, ______? So I'm sure he'll come. [ ]
A. doesn't he
B. does he
C. isn't he
D. is he
排卵后,由于孕激素的作用,基础体温可上升()
A.0.1~0.2℃
B.0.3~0.5℃
C.0.6~0.8℃
D.1℃
E.>1℃