【单选题】某六西格玛团队正在对企业的设备改造的经济性问题进行分析。企业需要在期初一次性投资更新设备,经过大量的数据收集和分析后发现,每年新设备带来的净收益不变,在给定的期初新设备投资额度下,假设改造后新设备的预计使用寿命为10年,按收益率为8%来计算,则净现值为零。基于上述信息,以下哪个说法是正确的()?
A.
如果该设备实际使用超过10年,则净现值一定为负数
B.
如果该设备实际使用超过10年,则净现值一定为正数
D.
如果投资方要求收益率必须达到10%,如果设备使用10年,则净现值一定为正数
【多选题】关于设备寿命的说法,正确的是( )
A.
设备经济寿命是从经济观点确定的设备更新的最佳时间
【单选题】There are still people who are reluctant to accept Darwin's of evolution.
【判断题】由于脐带绕颈、生产过程中胎盘早剥,羊水栓塞,生后发生窒息、中毒、护理不当所造成的脑瘫为先天因素.
【单选题】Some people are reluctant to hear 'an animal is unhappy' for the reason that______.
A.
they usually prefer positive emotions to negative ones
B.
the emotions animals have are usually happy rather than sad
C.
animals experience more happy emotions than unhappy ones
D.
they refuse to stop using animals for the benefit of their own
【单选题】CPR can ________ survival rates, but some people are reluctant to do it in part because they are unsure about the proper rhythm for chest compressions.
【简答题】18 A.Gift giving may make people feel insecure. B.People intend to give more gifts than they receive. C.Some people are reluctant to give gifts. D.The perfect gifts are hard to find.
【简答题】关于设备的自然寿命,下列说法正确的是( )。
【判断题】People are reluctant to show you the rope s when they know you are new.