胸部侧位片，纵隔的划分包括（）
A.前纵隔
B.左纵隔
C.中纵隔
D.右纵隔
E.后纵隔
参考答案：A, C, E
Busy as Tom is, exercise has always been______his work.
A．as a part of his life much as
B．as much a part of his life as
C．as much as a part of his life
D．so much a part of his life as
组合窗拼樘料描述正确的是：（）
A.组合窗的重要受力构件；
B.使组合窗承受该地区瞬时风压；
C.影响组合窗的刚度及固定；
D.组合窗拼樘料应进入抹灰层；
