关于BGP反射，下列说法错误的是（）。
A.路由反射器的IBGP对等体分为两类：客户机和非客户机。所有的客户机构成一个群
B.BGP路由反射器收到BGP路由更新信息后，会把更新信息传递给所有客户机和非客户机
C.非客户机互相之间不必须形成IBGP全连接
D.配置路由反射器群ID的目的是为了避免由于路由反射器而在自治系统内部产生选路循环的可能性
参考答案：A, B, C
A project has estimated revenues of $10.0 million and estimated costs of $7.5 million. The following table provides information on amount billed, cash received, and cost incurred for each year of the 3-year project (data are in $ millions).（）
| Year 1 | Year 2 | Year 3 | |
| Amount billed | 3.0 | 4.0 | 3.0 |
| Cash received | 3.0 | 5.0 | 2.0 |
| Cost incurred | 2.0 | 3.0 | 2.5 |
A. Using the revenue recognition method that tends to smooth income, the company will recognize profit of $ 0.83 million in year 3.
B. If ultimate payment is assured and the cost estimates are unreliable, the company will recognize profit of $1.5 million in year 2.
C. Considering this project only and using the percentage of completion method, total assets at the end of year 3 will be $ 2.5 million.