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圈干NEEDLE LOOP
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考题
下列关于Do…Loop语句的叙述不正确的是 ( )A．Do…Loop语句采用逻辑表达式来控制循环体执行的次数B．当Do while…Loop或Do until…Loop语句中while或until后的表达式的值为 true或非零时，循环继续C．Do…Loop while语句与Do…Loop until语句都至少执行一次循环体D．Do while…Loop语句与Do until…Loop语句可能不执行循环体
考题
WhichoftheseLayer2accessdesignsdoesnotsupportVLANextensions?()
A.FlexLinksB.loop-freeUC.loopedsquareD.loopedtriangleE.loop-freeinvertedU
考题
●The term, (74) loop, refers to a loop that is contained within another loop.(74)A.programB.nestedC.statement,D.Network
考题
If the meter needle of the oxygen indicator cannot be set to zero，what should be done ________．A.Replace the batteriesB.Check the sampling tube for blockageC.Adjust the final reading by the amount the needle is displaced from zeroD.Replace the platinum filament
考题
Which statement is true about loop guard？（）A、Loop guard only operates on interfaces that are considered point-to-point by the spanning tree.B、Loop guard only operates on root ports.C、Loop guard only operates on designated ports.D、Loop guard only operates on edge ports.
考题
指令“JBCTI，LOOP”的含义是（）A、TI为1时，程序转至LOOP，同时TI位清零B、TI为0时，程序转至LOOP，同时TI位置1C、TI为1时，程序转至LOOP，TI位不清零D、TI为FFH时，程序转至LOOP，同时TI清为00H
考题
在Mako模板中，for结构通过loop对象可获取循环的额外信息，以下哪些是loop对象中可获取到的属性（）A、loop.indexB、loop.lenC、loop.oddD、loop.even
考题
下列关于Do…Loop语句的叙述不正确的是（）。A、Do…Loop语句采用逻辑表达式来控制循环体执行的次数B、当Do While…Loop或Do Until…Loop语句中While或Until后的表达式的值为True或非零时，循环继续C、Do…Loop while语句与Do…Loop until语句都至少执行一次循环体D、Do While…Loop语句与Do Until…Loop语句可能不执行循环体
考题
下列关于do while…loop和do…loop until循环执行循环体次数的描述正确的是（）。A、do while…loop循环和do…loop until循环至少都执行一次B、do while…loop循环和do…loop until循环可能都不执行C、do while…loop循环至少执行一次，do…loop until循环可能不执行D、do while…loop循环可能不执行，do…loop until循环至少执行一次
考题
Which of the following describes the roles of devices in a WAN?（）A、A CSU/DSU terminates a digital local loop.B、A modem terminates a digital local loop.C、A CSU/DSU terminates an analog local loop.D、A modem terminates an analog local loop.E、A router is commonly considered a DTE device.F、A router is commonly considered a DCE device.
考题
Which test checks the transmitter and receiver of a local modem？（）A、data parityB、analog loop backC、local digital loop backD、remote digital loop back
考题
下列关于APU火警探测说法正确的是（）A、LOOP A探测到火警同时LOOP B 失效B、LOOP B探测到火警同时LOOP A 失效C、C、LOOP LOOP B 在5秒之内均失效D、以上答案均正确
考题
单选题During the fuel injection period, fuel pressure must exceed cylinder gas pressure to （）.A
ensure penetration and distribution of the fuel in the combustion chamberB
ensure the needle valve is flushed clean during each injectionC
prevent combustion gas blowback into the open needle valveD
prevent reflected pressure waves when the needle valve closes
考题
单选题If the meter needle of the oxygen indicator cannot be set to zero，what should be done? （）A
Replace the batteriesB
Check the sampling tube for blockageC
Adjust the final reading by the amount the needle is displaced from zeroD
Replace the platinum filament
考题
单选题The needle valve will open when the fuel pressure acting on the needle valve （） exerts a sufficient force to overcome the spring compression.A
tape faceB
tapered faceC
surfaceD
thinner face
考题
单选题在66题图中B所表示的弹簧曲的名称是（ ）。A
垂直开大曲B
连续开大垂直曲C
带圈垂直闭合曲D
垂直闭合曲E
欧米加曲（Omega Loop）
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