整体循环评吸法是指评吸员在用感官评价烟草用烟草制品时采用全部评吸感觉器官进行评价
参考答案：对
——I left my handbag on the train, but luckily someone gave it to a railway official.
——How unbelievable to get it back! I mean, someone ______ it.
A．will have stolen
B．might have stolen
C．should have stolen
D．must have stolen
套利交易的基本原则是：交易者要同时在相关合约上进行方向相反的交易，也就是说，要同时建立一个多头部位和一个空头部位。（）
