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【多选题】
以下水泥技术试验中说法正确的是( )。A.
夹膨胀测定仪中标尺最小刻度为0.5mm
B.
量水器最小刻度为1ml
C.
天平最大称量不小于1000g
D.
天平分度值不大于1g
E.
沸煮箱能在45±5min内将箱内的试验用水由室温升至沸腾并保持3h以上，整个试验过程中无需加水
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【单选题】Computers cannot communicate with each other directly over telephone lines because they use digital pulses whereas telephone lines use analog sound frequencies. What is the name of the device which pe...
A.
Interface
B.
Modem
C.
Attenuation
D.
Teleprocessor
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【简答题】工程量为 300kg 的钢支架刷防锈漆二遍,定额表中显示第一遍、第二遍防锈漆主材消耗量分别为 0.92kg , 0.78kg ,若酚醛防锈漆的材料预算价格为 9.98 元 /kg ,试计算防锈漆的主材费
【单选题】You have 10 hosts plus a server connected to a switch. Each device is running 10Mbps halfduplex.What is the bandwidth available for each device when it communicates to the server?
A.
1Mpbs
B.
2Mbps
C.
10Mbps
D.
100Mbps
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