【名词&注释】
骨质疏松症(osteoporosis)、软组织(soft tissue)、佝偻病(rickets)、转移性(metastatic)、体重减轻(weight loss)、性肺炎、食欲不振(loss of appetite)、基础能量消耗(basal energy expenditure)、能量需要量(energy requirement)、总能量消耗(total energy expenditure)
[单选题]基础能量消耗(basal energy expenditure)约占全天总能量消耗(total energy expenditure)的
A. 20%~30%
B. 30%~40%
C. 40%~50%
D. 60%~70%
E. 80%~90%