网络预约出租汽车平台公司开展合乘信息服务的，应当分别与用户签订网约车服务和合乘信息服务的协议，明确两者不同的法律关系以及平台企业相应的法律责任，不得误导用户。
查看答案
宝石的发光现象叫（）。
A. 磷光
B. 阴极发光
C. 荧光
D. 紫外光
Every chart is liable to be incomplete（）.
A. the final judge of the reliance the mariner can place on the information given
B. its immediate importance cannot always be verified before promulgation
C. through imperfections in the survey on which it is based，or subsequent alterations to the topography or sea floor
D. deferring the promulgation of certain less important informatio
微信支付 
支付宝支付