铸钢砂箱箱壁、箱带开裂可用下列哪种方法修复（）
A.钻孔夹以钢板
B.冷敲
C.热敲
D.烧焊
参考答案：D
Barack Obama, who came into _________ power on January 20, 2009, was awarded _________2009 Nobel Peace Prize.
A．the; the
B．the; /
C．/; the
D．/; /
谷氨酸氧化成CO2及H2O时可生成多少ATP（）
A.8个
B.12个
C.20个
D.24个
E.27个
