新型接线鼻子又叫()(针型)端头,只表注所接导线的直径,如1mm2、1.5mm2可分别接1mm2和1.5mm2导线。
A、热压
B、冷压
C、冲压
D、焊接
参考答案:B
Which of the following provides the most protection to a bondholder()
A. call protection.
B. refunding protection.
C. sinking fund protection.
简述时间序列回归分析法有哪些缺陷。