问答题BLAST应用有哪些?

问答题
BLAST应用有哪些?

参考解析

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A jack-up drilling unit elevated on the Outer Continental Shelf must have a fog horn that will sound ______.A.a 2-second blast every 20 secondsB.a 4-second blast every 20 secondsC.an 8-second blast every 30 secondsD.a 10-second blast every 30 seconds

ABC有哪些性能?应用有哪些方面?

prolonged blast()A、短声B、短笛C、长笛D、长声

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单选题_____AThree weeks ago.BLast month.CLast week.DLast Monday.

单选题A long blast to warn the vessels()vicinity.AinBonCatDfor

单选题You are underway and approaching a bend in the channel where vessels approaching from the opposite direction cannot be seen.You should sound().Aone blast,4 to 6 seconds in durationBthree blasts,4 to 6 seconds in durationCone continuous blast until you are able to see around the bendDone blast,8 to 10 seconds in duration

单选题In general, the oil mist defectors include a base plate with air blast pumpThe function of air blast pump is to ()crankcase.Asupply clean air to the measuring compartment of the units for more accuracyBgeneraate the pressure required for the extraction of the oil mist from theCgenerate the pressure required for the extraction of the oil mist from the crankcaseDsupply clean air to the measuring track of the units for more accuracy

名词解释题BLAST

单选题You are Master of a towing vessel engaged in towing three barges astern.The middle barge of the tow would be required to sound which of the following during restricted visibility ().ANo fog signalBA prolonged blast at intervals never to exceed more than two minutesCA prolonged blast followed by two short blasts at intervals never to exceed more than two minutesDA prolonged blast followed by three short blasts at intervals never to exceed more than one minute

问答题如何处理BLAST后过少或过多的结果?

单选题Traditionally,the signal for fire aboard ship is().Amore than 6 short blasts and 1 long blast on the whistle,and the same signal on the general alarmBcontinuous sounding of the ship's whistle and the general alarm for at least 10 secondsC1 short blast on the whistleDalternating short and long blasts on the ship's whistle

名词解释题PSI-BLAST

问答题BLAST中,E值和P值分别是什么,它们有什么意义?

单选题Which of the following represents the emergency signal for fire aboard ship?()AMore than six short blasts and one long blast on the whistleBContinuous blast of the ships whistle for a period of not less than 10 seconds supplemented by the same signal on the general alarmCThree short blasts of the whistle supplemented by the same signal on the general alarmDMore than six short blasts and one long blast on the whistle supplemented by the same signal on the general alarm

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问答题相比使用BLAST套件搜索数据库,BLAST2工具在结果呈现上有什么优点?

问答题如何用BLAST发现新基因?

单选题The abandon ship signal sounded by the vessels whistle is ().A6 short blasts and 1 long blastBlong blast mare than 6 short blastsCmore than 6 short blasts and 1 long blastD1 long blast of at least 10 seconds

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