理财顾问服务具有以下哪些特点（）。
A．顾问性
B．专业性
C．综合性
D．长期性
参考答案：A, B, C, D
PC机上能安装AIX操作系统吗？
An anchor winch should be equipped with mechanical brakes capable of holding（）.
A.half the breaking strength of the mooring line
B.the full breaking strength of the mooring line
C.the maximum expected tension of the mooring line
D.50% over the working tension of the mooring line
