依照我国《担保法》的规定，下列哪种财产可以抵押？（）
A. 自留山
B. 某中学的小汽车
C. 某大学的办公搂
D. 宅基地使用权
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Which Man clsss properly represents the relationship "Man has a best friend who is a Dog"？（）
A. class Man extends Dog { }
B. class Man implements Dog { }
C. class Man { private BestFriend dog； }
D. class Man { private Dog bestFriend； }
E. class Man { private Dog
发生事故后，汽车本身减轻人员伤亡和货物受损的性能称为（）。
A. 主动安全性
B. 被动安全性
C. 事故后安全性
The direct handoff connection method to an Oracle9i Shared Server involves fewer messages than in previous releases of the multithreaded architecture. Which type of message has been eliminated？（）
A. The initial request from the client to the listener.
B. Messages between the dispatcher and the shared server background processes.
C. A redirect message from the listener to the client during client connections.
D. Round-trip messages between the listener and the shared server background processes.
Given： What is the result？（）
A. 0，0，0
B. 150，60，0
Compilation fails.
D. 150，150，150
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