【简答题】A.A system which trains doctors. B.A group of experts who can provide professional advice. C.A computer program which can provide professional advice. D.A system which trains computer experts.
【单选题】All of the following are mentioned in the passage as circumstances in which professional service firms can benefit from offering an unconditional guarantee EXCEPT______
A.
The firm is having difficulty retaining its clients of long standing.
B.
The firm is having difficulty getting business through client recommendations.
C.
The firm charges substantial fees for its services.
D.
The adverse effects of poor performance by the firm are significant for the client.