A:黑龙江省黑龙江的主航道中心线上
B:新疆维吾尔族自治区的帕米尔高原
C:海南省南沙群岛
D:黑龙江省黑龙江与乌苏里江主航道的汇合处
It is he , rather than I, that in the company for two years.