低温球罐的支柱与球壳连接处最好采用：（）
A.接连接结构形式
B.加托板结构
C.U型柱结构形式
D.支柱翻边结构
参考答案：C
Since they bought the house, the Smiths _____ debt these years [ ]
A. have run into
B. have been out of
C. have been in
D. have got into
选恰当的词填空 加强党的思想建设，根本的是_______地用“三个代表”的理论武装全党。
A．坚定不移
B．坚持不懈
C．勇往直前
D．前赴后继
