The major goal of therapy in crisis intervention is to （）.

A．withdraw from the stress.

B．resolve the immediate problem.

C．decrease anxiety.

D．provide documentation of events.

彩超技术中，MTI的主要作用是

A．高速数据处理

B．滤除室壁运动的强回声信号

C．调节分层增益

D．数模转换

E．彩色编码