Burns are common injuries in our daily life. People can get    小题1:  by a variety of things, such as hot oil, steam, fire and so on. There are   小题2: types of burns—first degree, second degree or third degree, depending on which layers of the    小题3: are burned. If the burns, especially the third type, are not properly    小题4: , they may lead to serious problems. So knowledge of first aid is vitally   小题5:  .

血栓闭塞性脉管炎护理中，促进侧支循环建立的措施是

A．严禁吸烟、肢体保暖

B．做伯格运动

C．高压氧疗伤

D．应用扩血管药物

E．腰交感神经封闭