超声波可以通过增强炎性反应期，压疮从而更早进入增生期来加速创口的愈合
参考答案：对
Select the most effective sequence of the following four activities in initiating a project. (1)Define project phases；(2)Identify stakeholders；(3)Select a project manager；(4)Develop project charter.
A．(4)-(1)-(2)-(3)
B．(3)-(1)-(2)-(4)
C．(4)-(3)-(1)-(2)
D．(1)-(2)-(3)-(4)
简述染色质的化学组成及比例。
