根据胸部损伤的分类,下列哪种情况肯定是开放性损伤
A.胸部皮肤有伤口,肺压缩40%B.肋骨骨折并气胸C.气胸伴皮下气肿D.胸壁伤口处听到空气出入的响声E.支气管断裂
参考答案:D
Even though he has graduated from college, he still can't be financially ____ of his parents. [ ]
A. independent
B. fundamental
C. available
D. unbelievable
大容量单元机组汽轮机、锅炉、发电机之间都有哪些联锁条件?