加油站市场定位常以其销售的油品与购买油品的顾客所产生的一系列因素为依据。
参考答案：对
无缝线路地段高温季节如必须进行综合维修或成段保养时，应有计划地先放散后作业，并适时重新做好放散和稳定线路工作。
—When you born ?
—I _ born _ 17th June , 1981 .
A. were ; were ; in
B. was ; was ; in
C. were ; was ; on
D. were ; were ; on
