以下疾病不是慢性呼吸衰竭病因的是（）
A.重度肺结核
B.肺间质纤维化
C.尘肺
D.胸廓畸形
E.药物麻醉或中毒
参考答案：E
— Are you a visitor here?
— That's right. I ___ round the world and now my dream of coming to China ___ true.[ ]
A. have traveled; has come
B. travel; has been come
C. am traveling; has come
D. have traveled; has been come
机器在开镀之前我们进行恒温的目的是什么？
