The nurse is interviewing a client who is currently under the influence of a controlled substance and shows signs of becoming agitated. What should the nurse do

A．Use confrontation.

B．Express disgust with the client's behavior.

C．Be aware of hospital security.

D．Communicate a scolding attitude to intimidate the client.

信号把钩工在工作过程中，遇见紧急情况可以通过口喊，敲管子等方法发送信号。