在车身生产制造中,气体保护焊可能在哪些位置使用()
A、挡泥板加强件与前立柱连接处
B、车顶板与风窗立柱连接处
C、挡泥板与前纵梁连接处
D、中立柱与门槛板连接处
参考答案:A, D
— Did you go to the show last night?
— Yeah. Every boy and girl in the area _____ invited [ ]
A. were
B. have been
C. has been
D. was
肺脓肿早期最易与下列哪种疾病混淆()。
A.支气管扩张
B.支气管肺癌并感染
C.细菌性肺炎
D.空洞型肺结核
E.肺囊肿并感染