Which four of these key points should be considered during implementation of PPPoA architecture？（） ["the number of subscribers that will be serviced currently and in the future because this affects the number of required PPPoA sessions","The types of applications that the NSP offers to the end subscriber","The capacity of ATM and Frame Relay interworking on the NSP","in the case of more than one user， whether all users need to reach the same final destination orservice，or they all have different service destinations","Whether the service provider or the final service destination is providing the IP address to the CPE of the subscriber"]
具体商品的进出口属于（） ["有形贸易","无形贸易","进出口贸易","商品贸易"]
下列汇票中，无需提示承兑的是（）。 ["见票即付的汇票","定日付款的汇票 ","见票后定期付款的汇票 ","出票后定期付款的汇票"]
文特劳布认为在货币的商业性流通和金融性流通之间经常发生转移。（）
物理风化作用
原麦汁浓度
