【判断题】旅游市场的客体指的是旅游产品的消费者。( )
【单选题】关于复利计息与单利计息的说法中,正确的是( )。
B.
复利计息考虑了本金的时间价值,而单利计息未考虑
C.
复利计息考虑了先前计息周期累计利息的时间价值,而单利计息未考虑
D.
单利计息与复利计息的本质区别在于采用名义利率还是实际利率
【单选题】During Ana's flight, the flight attendant was very _______.
【单选题】It was recommended that passengers______smoke during the flight.
【单选题】During her flight to Australia, Jenny ran into a lot of difficulties.
【单选题】Electronic devices are allowed to be turned on during flight probably because______.
A.
they have no interference with plane's communications
B.
they are necessary devices to some passengers
C.
the reason to switch them off is different from that of cell-phone
D.
the interference they bring doesn't last long
【单选题】It is recommended that passengers______ smoke during the flight.
【单选题】关于唾液分泌的调节,下列哪项叙述是错误的
【多选题】产品的造型必须符合生产工艺流程,符合( )的现代生产特点。