电子商务业务系统包括支付型业务和______两类。
参考答案:非支付型业务
下列体现了对生命正确的认识是( )
①人生苦短,及时行乐
②生命,那是自然给人类去雕琢的宝石
③生命在于过程,而不是终点
④应该笑着面对生活,不管一切如何
A.①②③
B.②③④
C.①③④
D.①②④
William Sidney Porter, known as O. Henry, is most famous for ______.
A. his poems B. his playsC. his short stories D. his novels