冷却板带钢最主要的热处理工序是（）。
A．正火
B．退火
C．回火
D．淬火
参考答案：B
□45÷6，要使商是两位数，□里最大填______，要使商是三位数，□里最小填______．
The building was named Ford Hall________a man named James Ford.[ ]
A．in place of
B．in celebration of
C．in memory of
D．in favour of
