You are assigned as the project manager in a project with an aggressive schedule. During a recent meeting your team complained about the high pressure applied and the many hours of overwork time. What should you do first

A) Try to obtain additional budget and time.
B) Improve team communication and availability of high quality data on risks. Use this information to enable you to make well-founded decisions earlier.
C) The problem might be the customer disturbing project rhythm. Keep him on distance from the team.
D) Apply fast tracking to shorten project duration without additional work.

串联稳压电路由哪几部分组成？