竞争调查的范围包括（）。
A.竞争对手有哪些
B.人口统计资料
C.竞争对手的优劣势
D.竞争对手团队构成
E.竞争对手的价格策略
参考答案：A, C, E
With the new technique ______, the factory produced ______ family cars in 2009 as the year before.[ ]
A. to introduce; three times many as
B. introduced; three times as many
C. introducing; three times as many
D. being introduced; three times many as
用光时域反射仪（OTDR）测试一个光缆中继段，每根单模光纤接续损耗平均值不大于（）（1310nm、150nm）。
