学前儿童一日三餐中,蛋白质、脂肪、碳水化合物的合理分配量,应占总热量的比例分别是__、__、和__

A、蛋白质35％，脂肪15％，碳水化合物50％

B、蛋白质15％，脂肪50％，碳水化合物35％

C、蛋白质15％，脂肪35％，碳水化合物50％

D、蛋白质50％，脂肪l5％，碳水化合物35％

E、蛋白质35％，脂肪50％，碳水化合物15％

A、35%～45%，45%，<20%

B、40%～50%，40%，20%

C、50%～60%，<15%，30%

D、20%～30%，60%，20%

E、<15%，50%，40%

A 碳水化合物占50-55%，蛋白质提供的热量占30%，脂肪提供的总热量不能超过15%

B 碳水化合物占30-40%，蛋白质提供的热量占30%，脂肪提供的总热量不能超过30%

C碳水化合物占55-60%，蛋白质提供的热量占15-20%，脂肪提供的总热量不能超过30%

D碳水化合物占40-50%，蛋白质提供的热量占20-25%，脂肪提供的总热量不能超过25%

A．NH 3

B．CH 4

C．H 2 O

D．NO

Currently, different types of multimodl trnsport opertion involving differentCurrently, different types of multimodl trnsport opertion involving different combintionsre tking plce. （） is one types of multimodl trnsport opertions but not involving ril.Lnd bridge B．ir/se C． Se trin D．Piggybck

A．Land bridge

B．Air/sea

C．Sea train

D．Piggyback

A．121℃,2 h

B．121℃,30 min

C．160~170℃,2 h

D．160~170℃,30 min

Which sttements is truebout light cigrette light cigrette contins low nicotineWhich sttements is truebout light cigrette light cigrette contins low nicotinend tr content. B．Smoking light cigrette is different from smoking regulr one. C．Women who smoke light cigrettes wnt to get higher levels of nicotine. D．Tobcco compniesdvertise cigrettess ’light’ to obscure smoking risks.

A．A light cigarette contains low nicotine and tar content．

B．Smoking a light cigarette is different from smoking a regular one

C．Women who smoke light cigarettes want to get higher levels of nicotine

D．Tobacco companies advertise cigarettes as ’light’ to obscure smoking risks．