观察早期脑梗死首选（） ["平片","CT","MRI-DWI成像","血管造影","B超"]
少腹坚满，按之疼痛，小便自利，大便色黑易下，神志如狂，时清时乱，口干，漱水不欲咽，舌紫绛，脉细涩。治疗方最宜选用（） ["葛根芩连汤","宣白承气汤","桃仁承气汤","增液承气汤","调胃承气汤"]
要观察脑内动静脉畸形的供血动脉及引流静脉最好的检查方法（） ["平片","CT","MRI-DWI成像","血管造影","B超"]
日晡潮热，大便秘结，腹满硬痛，舌苔焦躁，脉沉实有力。治疗方最宜选用（） ["葛根芩连汤","宣白承气汤","桃仁承气汤","增液承气汤","调胃承气汤"]
身热，咳嗽，胸闷，肌肤红疹，苔薄白，脉数。治疗方最宜选用（） ["银翘散加减","栀子豉汤","宣白承气汤","麻杏石甘汤","桑杏汤"]
简述PDCA循环4个阶段，8个步骤。
