Among types of carrier ownership, ______ are privately or publicly owned companies committed to performing a movement service of the same quality for all shippers on an equal basis and without discrimination.
A、common carriers
B、contract carriers
C、private carriers
D、united carriers
【正确答案】:A
【题目解析】:Common carriers are privately or publicly owned companies committed to performing a movement service of the same quality for all shippers on an equal basis and without discrimination.参见教材P190。