主机喷油泵零油位的检查与调整的目的

A. 速尿
B. 激素
C. 50%甘油
D. 50%葡萄糖
E. 20%甘露醇

A. 椎动脉
B. 墓底动脉
C. 小脑后下动脉
D. 小脑上动脉
E. 大脑后动脉

A. costs of officer and crew
B. loading and unloading costs
C. repair and maintenance expenses
D. administrative costs