单选题雷达更换磁控管后,应对()进行适当调整。A磁控管和调制管B调制管和速调管C速调管和收发开关管D磁控管和收发开关管
单选题
雷达更换磁控管后,应对()进行适当调整。
A
磁控管和调制管
B
调制管和速调管
C
速调管和收发开关管
D
磁控管和收发开关管
参考解析
解析:
暂无解析
相关考题:
单选题In the Northern Hemisphere you are caught in the dangerous semicircle of a storm with plenty of sea room available. The best course of action is to bring the wind on the().Aport quarter and make as much headway as possibleBstarboard quarter and make as much headway as possibleCstarboard bow and make as much headway as possibleDport bow and make as much headway as possible
单选题新船投入营运后,轮机长应根据新船特点重点做好下列工作()。 a.首先要确保营运要用到的设备、系统安全运转; b.对运行中暴露的质量问题,严格按照保修程序进行; c.解决处理新船、新机、新设备在初期运行中暴露的质量问题。Aa+bBb+cC仅仅是aDa+b+c
单选题The heat identified by only a change in temperature is known as ().Asensible heatBlatent heatCtotal heatDresidual heat
单选题If a centrifugal pump were continually operated with the discharge valve closed, the ().Amotor controller overload would openBpump would eventually overheatCrelief valve would continuously cycle openDmotor would overheat
单选题关于基尔霍夫(Kirchhoff)电流定律,下列说法错误的是()。A适用于各种不同元件所构成的电路B适用于任何规律变化的电流C交流电路电流定律表达式为∑i=0D交流电路电流定律表达式为∑I=0
单选题当一船能够用视觉看到他船的两盏舷灯时,其应当及早采取避碰行动;在采取向右转向行动的同时,应当鸣放“()”操纵信号,在夜间还可以显示“()”予以补充。A一短声;一短闪B一短声;一长闪C一长声;一短闪D一长声;一长闪
单选题GravinerMark-5型曲柄箱油雾浓度监视报警器中,测量系统的工作原理是基于()。A油雾浓度不同,透光程度不同B油雾浓度不同,导热率不同C油雾浓度不同,导电率不同D油雾浓度不同,顺磁性不同
单选题为大功率中速机选择曲轴箱油要兼有气缸油和系统油双重作用,因此对其要求与十字头柴油机系统油特别不同的是()Ⅰ、良好的中和能力Ⅱ、在高温下极佳的清洁能力Ⅲ、中等的分散能力Ⅳ、抗氧化安定性要好AⅡ+ⅣBⅠ~ⅣCⅠ~ⅢDⅡ~Ⅳ
单选题A lube oil filter can be used to remove most contaminants from lube oilA contaminant which will remain in the lube oil after filtering is ().AacidBfuel oilCsedimentDwater