截面为矩形的不锈钢钢材，除轧制外未经进一步加工，钢材宽度60mm，厚度8mm，热成型折叠捆状报验()
参考答案：7222.1900
No one _____ be more generous; he has a heart of gold.
A．could
B．must
C．dare
D．need
