未列入《铁路危险货物品名表》中的危险货物品名，由（）确定并公布。
参考答案：铁道部
承载能力不足（即k<1）的桥梁，应根据其技术状态来确定是加固、更换或改建。
He came to my class every week, but his attitude _______he was not really interested in the subject.
A．expressed
B．described
C．explained
D．suggested
