()是指材料在较低的温度下或增加应力时,经受塑性变形,当升高温度或减少应力时,这种材料能恢复到原来的形状
A. 形状记忆效应
B. 超弹性效应
C. 电阻特性
D. 阻尼特性
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在加工过程中由于热作用,容积变化和机械力作用的结果,在工件表层将出现残余应力;磨削加工淬火钢料时,常常出现()
A. 拉应力
B. 压应力
C. 拉应力和压应力
各牵引点和密贴检查部位的尖轨斥离位置与基本轨间动程和外锁闭装置的锁闭量定、反位两侧均等,其不均等偏差应不大于()
A. 1mm
B. 2mm
C. 3mm
D. 4mm
A Host connected to an NPV switch is not able to see the storage connected to the core switch. Given the output of the show command below, what is the reason of this issue?() switch# show npv status npiv is enabled External Interfaces: =============== InterfacE. fc1/1, VSAN: 1, FCID. 0x000000, StatE. Other Number of External Interfaces: 4
A. NPV is not enabled on the core switch?
B. The interface connected to the Core switch is in admin down state
C. The local host interface belongs to the wrong VSAN?
D. The local host interface is not able to logi