在对某普通成年人膳食调查结果,即能量和各种营养舒摄入量进行评价的时候,请回答以下问题。
当其蛋白质实际摄入量达到其RNI的百分之几范围时,即认为是合理。
参考答案:
≥90%
设f(x)=3-|x-1|,则∫-22f(x)dx=( )
A.7
B.8
C.7.5
D.6.5
—I hear a foreigner will come to our school. Do you know him ?
—Yes, Edward, university student from Europe, will teach us art in his spare time.
A.an; /
B.an; an
C.a; /
D.an; the