电阻类元器件产生的噪音为() ["A.散粒噪音","B.热噪音","C.分配噪音","D.感应噪音"]
所谓证据确凿是指() ["案件事实均有相应的证据证明","各项证据均是真实可靠","各项证据对所证明的事实均有证明力","各项证据相互协调一致","允许出现部分证据矛盾"]
梁体平整度允许偏差为()mm ["A、每米长偏差≤2","B、每米长偏差≤3","C、每米长偏差≤4"]
何时ECAM页面上的APU转速值变成红色(). ["A.N>107%","B.N>102%","C.N>99%","D.N>95%"]
采用2FSK调制的设备是() ["A、IMARSAT-A/EGC","B、INMARSAT-C/DSC","C、1.6GHZEPIRB/NBDP","D、NAVTEX/EGC"]
绘图题:如图E-18所示为逻辑门,请写出P与A、B之间的关系等式。