【名词&注释】
超声多普勒(doppler ultrasound)、外展神经(abducent nerve)、持续时间(duration)、面神经核(facial nucleus)、肺结核化疗(pulmonary tuberculosis by chemotherapy)
[单选题]肺结核化疗(pulmonary tuberculosis by chemotherapy)时,一线强化和二线强化每日用药的持续时间为
A. 1个月
B. 2个月
C. 1~3个月
D. 3~5个月
E. 6个月