You are part of a team that is working to develop a medical implant that would accentuate the biceps of middle-aged men. Numerous articles in prestigious medical journals have discussed this controversial product. Your project manager, a medical doctor by training, is an expert in medical implantation devices and many journal articles have mentioned him by name. Although his knowledge of the subject is vast, he continually seeks opinions from the team about a wide variety of project and product issues. Team members often run project meetings while he sits silently at the head of the table. His most likely I response to a question is “What do you think we should do” Which one of the following best characterizes his leadership style

A．Laissez-fair

B．Team directe

C．Collaborativ

D．Shared leadershi

随着建筑施工技术的发展，脚手架的种类也越来越多，按搭设的用途，可分为( )。

A．单排架和满堂架
B．外脚手架和内脚手架
C．扣件式和门式脚手架
D．砌筑架和装修架