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what is the routing family which the router has to build map for the routing domain?
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负反馈放大电路中引入电压串联负反馈措施后,放大电路的输入及输出电阻值(ri及ro)的变化情况是()。
A、ri、ro均增大B、ri、ro均降低C、ri增大、ro降低D、ri降低、ro增大
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What is(are) standard operating procedure(s) used on a Ro-Ro vessel?A.Periodic inspection and retensioning of lashings as required during voyageB.Lashings may be completed after the vessel leaves portC.One QMED assigned to oversee the initial loading and lashingD.All of the above
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What characterizes a Ro-Ro vessel ________.A.May carry up to 24 passengersB.High freeboard and sail areaC.Long port stays required for cargo securingD.Lightweight securing equipment trailers
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What is used when securing heavy vehicles aboard Ro-Ro vessels ________.A.Buckle or ratchet tensionerB.WebbingC.Manila ropeD.None of these
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What may NOT be used when securing heavy vehicles aboard Ro-Ro vessels ________.A.Chain leverB.TurnbuckleC.WebbingD.Chain
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What should be done after putting down the ramp on a Ro-Ro vessel,prior to loading or discharging cargo ________.A.Turn on red cargo lightB.Turn on ventilation for cargo holdsC.Call out the deck department for all handsD.None of the above
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What should you be concerned with when loading and securing vehicles aboard a Ro-Ro vessel ________.A.That all fuel is drained from the vehicles' tanks to prevent fire hazardB.The size,weight,and center of gravity of vehicle/cargo unitC.The preferred stowage of vehicles is athwartships wherever possibleD.The vehicles' brakes should not be set to allow for adjusting the lashings
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What should you be concerned with when loading and securing vehicles on a Ro-Ro ________.A.Number,position and angle of lashesB.Number of axlesC.Disconnecting the battery cables to prevent fire hazardD.Minor air pressure changes in the tires
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如图所示,已知β=100,rbe=1kΩ,计算放大电路电压放大倍数Au、输入电阻ri和输出电阻ro分别是( )。
A.Au=-6.5,ri=5.2Ω,ro=2kΩ
B.Au=6.5,ri=5.2Ω,ro=20kΩ
C.Au=-65,ri=1kΩ,ro=6kΩ
D.Au=65,ri=200Ω,ro=2kΩ
考题
单选题What is(are) standard operating procedure(s) used on a Ro-Ro vessel? ()A
Periodic inspection and retensioning of lashings as required during voyageB
Lashings may be completed after the vessel leaves portC
One QMED assigned to oversee the initial loading and lashingD
All of the above
考题
单选题Cargo that is suitable for carriage on Ro-Ro vessels includes().A
trailersB
rolling vehiclesC
containersD
All of the above
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单选题电流并联负反馈使放大器()A
Ri减小,Ro增加B
Ri增加,Ro减小C
Ri,Ro均增加D
Ri,Ro均减小
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