方案寿命期中，使项目净现金流量的净现值为零时的收益率称为()。

A. 在中国长期居住的加拿大国籍的大山
B. 还有一个礼拜过18周岁生日的小明
C. 因乱停车受到处罚的张某
D. 因故意杀人被判处无期徒刑的汪某

A．It was found that study subjects responded well to the infusion of compound X in repeated tests, but they did not respond consistently to the infusion of compound Y.
B．It was found that the study subjects responded well to compound X in repeated tests. It was also found that the response to compound Y was not consistent.
C．We found that the study subjects responded well to compound X in repeated tests. We also found that the response to compound Y was not consistent.

A. 物权具有排他性，债权具有请求性
B. 物权是对世权，债权是对人权
C. 同一物上既有物权又有债权时，物权总是优于债权
D. 物权可因债权的实现而取得，债权可因物权受侵害而发生