[问答题,简答题] MAS业务相比企信通业务具有哪些优势？请列举四条以上。

甲酸盐钻井完井液体系的密度范围为（）。 ["1.07~1.35g/m³","1.38~2.30g/m³","1.80~2.30g/m³","1.38~3.00g/m³"] 类比推理和简单枚举归纳推理都是前提（）结论的推理。 下行沟通的目标是什么？ 起动（加速）油量过小不够起动柴油机如何处理？ 对于一个正常的移动台主叫流程，下面的信令流程先后次序正确的是（） ["OriginationMessage->CMServiceRequest->Allocation->Establish->AssignmentComplete->TchPreamble","OriginationMessage->CMServiceRequest->TchPreamble->Establish->AssignmentCompleteAllocation","OriginationMessage->CMServiceRequest->Establish->Allocation->TchPreamble->AssignmentComplete","OriginationMessage->CMServiceRequest->Establish->AssignmentComplete->Allocation->TchPreamble"] MAS业务相比企信通业务具有哪些优势？请列举四条以上。