下列支气管疾病中,最常并发咯血的是().
A.良性支气管瘤
B.支气管内异物
C.支气管扩张症
D.慢性支气管炎
E.支气管哮喘
参考答案:C
His oversight of the danger that resulted in two deaths and five wounded in the expedition was _________ criminal.
A.no less than
B.not less than
C.nothing less than
D.less than
企业主要负责人应当在抓经营管理的同时必须抓安全生产,这是指安全生产管理原则中的。()
A、“三同时”原则
B、“三同步”原则
C、“管安全必须管生产”原则
D、“五同时”原则