孔径光阑经它前面光学系统在物空间所成的像称为入射光瞳。()
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在定中心仪上确定渐进多焦加工中心和球柱镜片大致相同,区别在配镜十字替代远用光心。()
在模板机上制作模板时,需要将模板坯料的反面朝上。()
Whichtwostatementsaretrueabouttrustboundaries?()
A. Classifyingandmarkingtrafficshouldbedoneasclosetothetrafficsourceaspossible.
B. Classifyingandmarkingtrafficshouldbedoneatthedistributionlayer.
C. Trafficisclassifiedandmarkedasittravelsthroughthenetwork.
D. Ifuntrustedtrafficentersaswitch,itcanbemarkedwithanewQoSvalueappropriateforthepolicyinplace.
E. Thetrustboundarymovesdependingonthetypeoftrafficenteringthenetwork.