托运人与承运人可以约定运费由收货人支付；但是，此项约定应当在运输单证中载明。
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Today, this ability to maintain a stable body temperature—called homeothermy—is known to exist among myriad species of mammals and birds. But there are also some notable exceptions. The body temperature of the fat-tailed dwarf lemur, for example, can fluctuate by nearly 45°F (25°C) over a single day.，更多细节参见旺商聊官方下载
class CsvStorage {