Crashing in time management is ______ .

A．a schedule compression technique that typically includes reducing schedule activity durations and increasing the assignment of resources to schedule activities

B．a schedule compression technique in which phases or activities that normally would be done in sequence are performed in parallel

C．the timely input of data to calculate the critical path

D．equivalent to minimizing float

男性，40岁，患血栓闭塞性脉管炎，处于局部缺血期。

护士对病人日常生活中的健康指导内容正确的是

A．少吸烟

B．穿胶底皮鞋

C．坚持勃格氏运动

D．出现患肢溃疡或坏疽时应增加活动量

E．患肢疼痛时可自行服用吗啡