塑料电缆是以聚氯乙烯，聚乙烯等塑料作芯线的绝缘材料或护套材料的电缆。
参考答案：对
— What _______ if you _______ on the Titanic?
— What a question! [ ]
A. would you do; were
B. did you do; were
C. had you done; would have been
D. would you have done; had been
该公司2003年已获得利息倍数为（）
A．1.98
B．1.77
C．7.89
D．6.744
