某站自控系统因受到若干干扰,存在设备误动作不稳定现象,造成该现象发生的原因可能有() ["A.强弱电信号线未分开走线","B.PLCI\/O端子上并接50-100uF电容,以释放大交流电信号","C.PLC未采用交流220VAC输入卡件,提高导通门坎电压","D.PLC开关量回路未采用隔离加净化电源"]
下列哪种物质不是缩血管物质() ["激肽","去甲肾上腺素","儿茶酚胺","血栓烷A2(TXA2)","血管加压素"]
关于电接触烧伤的特点和处理正确的是() ["不宜反复探查、清创","早期输液严格按烧伤面积计算","采用包扎疗法","易发生继发性出血","组织可进行性坏死"]
植皮失败的原因有() ["血肿","感染","肉芽创面","皮片厚","包扎压力过高"]
停放制动的制动力由()所产生。 ["气缸","活塞","弹簧","杠杆"]
钢丝绳涂油油料怎样配制?