危急值(critical value)是指临床医技部门的某些检查出现异常的,可能危及患者的生命的结果。当这些检查结果出现时,表明患者可能正处于危险的边缘状态,如果临床医师能及时得到这些信息并迅速给予患者有效的干预措施或治疗,就可能挽救患者生命,否则就可能失去最佳抢救机会,出现严重后果()
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B.The average optical power of the optical interface is measured as follows. One end of the pigtail is connected to the light receiving interface of the optical board and the other end is connected to the input interface of the optical power meter. After the optical power becomes stable, read the value, which is the transmitting optical power of the optical interface.
C.The sensitivity and overload indicator of optical interface are measured as follows. Increase the adjustable optical attenuator gradually and observe the critical value when the optical interface generates an error code. Record the optical power value at this time, which is the sensitivity.
D.The sensitivity and overload indicator of optical interface are measured as follows. Reduce the adjustable optical attenuator gradually and observe the critical value when the optical interface generates an error code. Record the optical power value at this time, which is the overload indicator.