填空题

Because of the effects of an electromagnetic field on growing cells, ______ are the ones who easily fall victim to its effects.

【参考答案】

young children and babies

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热门试题

填空题

Any frequency close to 30Hz will interfere with cues that keep our biological cycles properly timed because the frequecies are close to the ______ of man.

填空题

The probable safe level for constant exposure to electromagnetic radiation is 1 milligauss both for adults and children.