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Which four of these key points should be considered during implementation of PPPoA architecture？（）
A. the number of subscribers that will be serviced currently and in the future because this affects the number of required PPPoA sessions
B. The types of applications that the NSP offers to the end subscriber
C. The capacity of ATM and Frame Relay interworking on the NSP
D. 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
E. Whether the service provider or the final service destination is providing the IP address to the CPE of the subscriber
采用速度反馈的闭环调速系统能有效地改善电梯的机械特性，从而提高调速精度，扩大调范围（）
A. 正确
B. 错误
留置尿管期间应指导病人活动，无心、肾功能不全者，应鼓励多饮水，成人饮水量每天（）毫升。
A. 1000-1500ml
B. 2000-2500ml
C. 2000-3000ml
D. 1500—2000ml
报刊业务员的职业守则要求是爱岗敬业，诚实守信；遵纪守法，严守秘密；精通业务，（）；奉献发行，开拓创新。
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