男,56岁,痰中带血1月余,X线检查如图,最可能的诊断是()
A.两肺炎症
B.肺转移瘤
C.血行播散型肺结核
D.细支气管肺泡癌
E.矽肺
参考答案:D
— The plane is due to take off at 7:50 from the airport. _____ we fail to arrive there in time?
— Try to take another flight then. [ ]
A. What if
B. As if
C. Even if
D. Only if
带式输送机输送带断带事故的主要原因有()
A、输送带张力过大
B、输送带接头质量差,不符合强度要坟
C、严重超载
D、使用非阻燃输送带