国家关于灶具能效等级分为三级，一级能效63%，二级能效59%，三级能效55%，名气新品灶具612B（气源为天然气）能效等级为（）

A.63% 69% 一级

B.65% 69% 一级

C.65% 70% 一级

A.63%

B.64%

C.65%

D.66%

A.新国标一级能效

B.旧国标一级能效

C.二级能效

D.三级能效

A.59%

B.63%

C.65%

D.69%

A.55％

B.59％

C.63％

A.65%

B.59%

C.63%

D.61%

A.二级能效，59%

B.一级能效，62%

C.一级能效，63%

D.一级能效，65%

A.96%

B.90%

C.85%

D.84%

A.YCAE130XHME 一级能效，YCAE065XHME 二级能效，MAC450DR5SR 三级能效，MAC230DR5SR 一级能效

B.YCAE130XHME 一级能效，YCAE065XHME 一级能效，MAC450DR5SR 一级能效，MAC230DR5SR 一级能效

C.YCAE130XHME 二级能效，YCAE065XHME 二级能效，MAC450DR5SR 一级能效，MAC230DR5SR 二级能效

D.YCAE130XHME 一级能效，YCAE065XHME 三级能效，MAC450DR5SR 一级能效，MAC230DR5SR 三级能效

A.63%.65%

B.65%.70%

C.53%.69%

D.63%.66%

A.5.0

B.4.5

C.4.0

D.4