下列属于物业管理公司权利的（）
A.收取物业费
B.制止违反规章制度的行为
C.管理维修基金
D.要求业委会协助管理
参考答案：A, B, D
Which of the following is least accurate about exchange traded funds (ETF)（）
A. Diversification can be obtained easily with a single ETF transaction.
B. ETFs have a cost advantage over traditional mutual funds.
C. ETFs trade once a day at closing market prices.
bOOT状态下使用（）命令可以查看单板IP设置。
A.P
B.C
C.C
D.P
