声波透射法中,测点间距宜为() ["10~30cm","20~40cm","30~50cm"]
发动机冷转(干冷转)是:(). ["只供油,不点火,启动机带动发动机到一定转速","不喷油,不点火,仅由启动机带动发动机转动","试完大车后发动机的转动过程","发动机点火后转速并未增加至慢车转速,而保持在较低转速的转动"]
一个RB包含多少个RE() ["12","36","72","84"]
采用凯斯法检测基桩时,一般要求单击贯入度为() ["<2.5mm","2.5~10mm",">10mm"]
下列哪个节点在UE开机附着过程中为其分配IP地址() ["eNodeB","MME","P-GW","S-GW"]
粗苯是淡黄色()液体,比水轻。