净现值为(),说明该投资项目可行。
A.正数
B.负数
C.1
D.固定值
参考答案:A
I was completely terrified when I suddenly saw a dark figure leaning ________ the door in front of me.
A.in
B.to
C.against
D.by
门静脉的正常压力为
A.0.2~0.5kPa(2~5cmH2O)B.0.6~1.2kPa(6-12cmH2O)C.1.3~2.4kPa(13~24cmH2O)D.2.5~3.9kPa(25~40cmH2O)E.4.0~5.0kPa(41~60cmH2O)