The frequency 518KHZ will be used to transmit()and()wanings in NAVTEX.
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The frequency 156.525MHZ and 156.8MHZ should be used in the band of().
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NAVTEX使用的频率为() 1)518KHZ 2)156.8MHZ 3)490KHZ 4)4209.5KHZ 5)156.525MHZ 6)2182KHZ
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The frequency of an alternator is controlled from the main switchboard by adjusting the()
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Prior to closing the breaker when paralleling two AC generators, the recommended practice is to have the frequency of the incoming machine ()
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When testing a Class A EPIRB you will know the EPIRB is working properly if you hear on 99.5 Mhz FM or any vacant frequency on a nearby AM radio().
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If you know that the vessel you are about to call on the VHF radio maintains a radio watch on both the working and the calling frequencies,which frequency should you call on? ()
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The transmission time duration of a single pulse of radio-frequency energy is a function of the().
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Pitch is produced by frequency of vibration of the vocal cords. The higher the frequency, the higher the pitch.()
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To increase the frequency of an operating AC generator, you should ()
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The frequency of an AC generator is adjusted by means of the ()
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What is the frequency of the front side bus (FSB) on the eX4 architecture?()
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NAVTEX接收机的功能有().①在518kHz上接收MSI;②不重复打印电文;③在一定时间间隔内不重复打印已收妥电文;④能将所收报文的技术编码Bl~B4存储72h;⑤能选择接收设置Bl,使接收机选择接收所需Bl类电报;⑥能选择接收设置B2,使接收机选择接收所需B2类电报
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When it is accepted to remain on the frequency indicated,you should say().
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The frequency of the alternating current generated by a synchronous generator is governed by the speed and the()
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NAVTEX系统主要使用的频率是()。①518kHz;②490kHz;③4209.5kHz;④156.8MHz;⑤8414.5kHz;⑥12557kHz
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The frequency output of an operating alternator is controlled by the ().
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In which three frequency bands does the Cisco Spectrum Expert Wi-Fi tool perform spectrumanalysis? ()
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Which manipulation is the fastest manipulation of frequency?
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The highest frequency of a signal is ,sampling angular frequency is , , in order to avoid aliasing when sampling this signal, what pre-processing is required before sampling ()
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“1*3” reuse, radio frequency hopping and 50% load will result in the following gain:(
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The frequency 849MHz doesnt interfere with the planes GPS system because______.
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()按规定NAVTEX 518KHz播发台的覆盖范围_____海里
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Which logical channel must be dimensioned for each cell when considering the frequency
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Assume the miss rate of an instruction cache is 2% and the miss rate of the data cache is 5%. If a processor has a CPI of 1.5 without any memory stalls and the miss penalty is 50 cycles for all misses, determine how much faster a processor would run with a perfect cache that never missed. Assume the frequency of all loads and stores is 36%. the speed with a perfect cache that never missed / the speed with a cache that will miss=______(number only, keeping 4 significant digits)
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