输油臂利用简单的()锁止在静止(收容)位置。 ["A、电动装置","B、机械装置","C、液压装置","D、气动装置"]
()是装运内臂和油轮歧管之间的液体产品的管道。 ["A、旋转接头","B、内臂","C、外臂","D、工艺管线"]
轴流式压气机工作叶轮进出口气流的绝对速度沿切向的分速度之差与相对速度沿切向的分速度之差有如下关系:(). ["大于","小于","相等","不等"]
LTE中存在()个PRACH签名序列 ["16,","32,","48,","64."]
目前我国收兑的外钞有哪些?
什么是人民币银行结算账户?