【名词&注释】
从业人员(jobholder)、医务人员(medical staff)、酪氨酸羟化酶(tyrosine hydroxylase)、苯丙酮尿症(phenylketonuria)、苯丙氨酸羟化酶(phenylalanine hydroxylase)、重要依据(important basis)、基础能量消耗(basal energy expenditure)、清洁卫生(cleaning and health)、人员行为规范、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%