单项选择题
A.1~2圈B.2~3圈C.3~4圈D.4~5圈
A.1minB.2minC.3minD.4min
A.油箱温度高B.压力调节阀故障C.油管线泄漏D.主油泵效率下降
A.降低贫吸收油量,液控阀失灵改副线,液面失灵联系仪表修理B.降低贫吸收油量,提高富吸收油量C.提高贫吸收油量,降低富吸收油量D.提高贫吸收油量,液控阀失灵改副线,液面失灵联系仪表修理
微信扫一扫,加关注免费搜题