There is someone _________ the door.[ ]
A. in
B. on
C. to
D. at
答案:D
Sir, you are not allowed to enter the building if you don't get our manager's ________.[ ]
A.permission
B.connection
C.instruction
D.introduction
证券公司财务管理的目标是( )。
A.防范风险
B.保持流动性
C.每股收益最大化
D.公司价值最大化