烟管的主要传热方式属于()。 ["对流","辐射","传导","导热"]
治疗焦虑性失眠宜选用的药物是() ["丙戊酸钠","氯丙嗪","硫喷妥钠","苯妥英钠","地西泮"]
气体管路风压试验用()压缩空气试压土无渗漏,然后降至6000Pa,5min内压力降低值不超过50Pa。 ["0.5MPa","0.3MPa","0.1~0.15MPa","0.7MPa"]
正常情况下,血涂片染色后中性粒细胞核象最多见的是() ["杆状核","二叶核","三叶核","四叶核","五叶核"]
腹部损伤患者观察期间,常规每次检查腹部的间隔时间为() ["30分钟","35分钟","15~30分钟","30~60分钟","60分钟"]
怀档式