RevA相比Rev0作了很多改进,主要有() ["提高反向数据吞吐能力","改进前向链路","增强了对QoS的支持","完善了双模操作"]
压裂施工现场应以()为中心向外展开。 ["高压区","低压区","混砂车","仪表车"]
如果在商于单发升限时出现1发失效,需要保持什么速度?() ["A.vMC<\/sub>","B.vYSE<\/sub>","C.vXSE<\/sub>"]
EVDO Rev.A的反向MAC信道包括()这几个子信道 ["RRI","DRC","RA","DSC","Ack"]
在进行通井作业时,通井规的直径应()套管内径。 ["略大于","等于","略小于","0.5倍"]
枣树有三枝两芽,其中两芽为()和(),三枝为发育枝、结果母枝和()。