26型杵环杆长度是()。
A、2530mm
B、2600mm
C、2630mm
D、2650mm
参考答案:A
患儿,3岁,反复右下肺炎3次。查体:右下肺可闻及喘鸣音。胸片:气管向右侧移位,右下肺炎,肺不张,异物史不清。可能的诊断是()
A.支气管扩张
B.支气管肿瘤
C.支气管异物
D.支气管内膜结核
E.支气管先天畸形
In order to support the big family, he worked so hard that _____ he made himself ill. [ ]
A. occasionally
B. purposefully
C. normally
D. eventually