Which action is routinely performed at the annual servicing and inspection of a dry-chemical cartridge-operated portable fire extinguisher?()
A. Test the pressure gauge for correct reading
B. Weigh the cartridge
C. Replace the dry chemical
D. Pressure test the discharge hose
女,49岁。烧伤后3小时入院。双大腿、小腿及足部布满大小不等水疱,可见潮红创面,疼痛明显。该患者的烧伤面积是()
A. 45%
B. 20%
C. 40%
D. 35%
E. 32%
五岁男性患者,拟在常温下行脑膜血管瘤摘除术,术前血压160/95mmHg,ECG、肝、肾功能正常,术中拟行控制性降压。若降压前发现该病人有颅内高压,则()
A. 降低潮气量,减少胸膜腔内压对脑静脉回流的阻力
B. 改用硝酸甘油作降压药
C. 蛛网膜下隙穿刺放出部分脑脊液
D. 放弃控制性降压
E. 静滴甘露醇或作暂时过度通气