A、<p><span style="font-family: 宋体; font-size: 19px; ">自愿原则</span></p>
B、<p><span style="font-family: 宋体; font-size: 19px; ">公开原则</span></p>
C、<p><span style="font-family: 宋体; font-size: 19px; ">有偿原则</span></p>
D、<p><span style="font-family: 宋体; font-size: 19px; ">诚实信用原则</span></p>