()是指物体在外载荷作用下抵抗过大弹性变形的能力。
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Anoperationalamplifier,asusedintodaysconsoles,hasacalculatedgainof5Thismeansthatwhentheinputchanges()
A. 5volts,theoutputchanges10volts
B. 10volts,theoutputchanges5volts
C. 2volts,theoutputchanges10volts
D. 10volts,theoutputchanges2volts
UniversalmotorswilloperateonACorDCcurrent,andaregenerallyfoundin()
A. portabletools
B. largepumpmotors
C. turboelectricmainmotors
D. forceddraftfans
Todeterminewhatnavigationlightsandday-shapesmustbedisplayedonmobileoffshoredrillingunitsundertow,youshouldcheckthe().
AmericanBureauofShippingclassificationrules
B. InternationalRegulationsforPreventingCollisionsatSea
C. SafetyofLifeatSeaConvention
D. MineralsManagementServicerules
机器和机构的总称是()。
A. 机构
B. 零件
C. 机械