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.

在旋风除尘中，旋转的气流中作用在粉尘上的（）。

A.离心力较重力大5-2500倍

B.重力较离心力大5-2500倍

C.离心力较重力大5-3000倍

D.重力较离心力大5-3000倍