单项选择题
A.are generally not strong enough to destroy contaminating organismsB.do not bring about significant changes in the food itselfC.may destroy some of the nutrients in the foodD.should be submitted to FDA for approval
A.certainly loses its nutritive valueB.maintains its nutritive value no different from the nonirradiatedC.keeps its nutritive value better than canned foodD.is recommended as the best of all preserved foods
A.noticeB.watchingC.conformityD.experience