A.60UW/cm
B.70um/cm
C.80um/cm
D.85um/cm
E.90um/cm
[单选题]紫外线灯管强度低于多少应更换新灯管A.60um/cmB.70um/cmC.80um/cmD.85um/cmE.90um/cm
[单选题]紫外线灯管强度低于多少应更换新灯管A.60UW/cmB.70um/cmC.80um/cmD.85um/cmE.90um/cm
[单选题]紫外线灯管强度低于多少应更换新灯管A.60μm/cmB.70μm/cmC.80μm/cmD.85μm/cmE.90μm/cm
[单选题]紫外线灯管强度低于多少应更换新灯管()A .60um/cm2B .70um/cm2C .80um/cm2D . D.85um/cm2E .90um/cm2
[单选题]紫外线消毒灯管的紫外线强度低于(),就应该更换灯管。A .2000uW/cm2B .2500uW/cm2C .3000uW/cm2D .3500uW/cm2
[单选题]紫外线消毒灯管的紫外强度低于(),就应该更换灯管。A . 2000uW/cm2B . 2500uW/cm2C . 3000uW/cm2D . 3500uW/cm2
[单选题]紫外线新灯管的照射强度不得低于( )。A.80~90μW/cm2B.85~90μW/cm2C.85~95μW/cm2D.90~95μW/cm2E.9
[单选题]紫外线新灯管的照射强度不得低于( )。A.80~90μW/cm2B.85~90μW/cm2C.85~95μW/cm2D.90~95μW/cm2E.9
[单选题]使用中紫外线灯管的照射强度不得低于()。A . 70μW/cm2B . 80μW/cm2C . 90μW/cm2D . 100μW/cm2E . 10μW/cm2
[单选题]使用中紫外线灯管的照射强度不得低于A.70μW/cmB.80μW/cmC.90μW/cmD.100μW/cmE.10μW/cm