按能量计算,我国成人蛋白质推荐摄入占膳食总能量的()。
A.8%~10%
B.10%~12%
C.15%~18%
D.18%~20%
E.20%~22%
参考答案:B
His business failure left him at the edge of desperation, but, , he managed to go out of the shadow through years of efforts.
A.time and tide wait for no man
B.don’t count your chickens before they are hatched
C.no pains, no gains
D.time heals all wounds
反应物官能度的影响