第17题: [单项选择]信息产业部最近制定并发布的手机充电器统一标准,在全国范围内是______。 A. 强制性标准 B. 推荐性标准 C. 指导性标准 D. 参考性标准 参考答案:A 答案解析:强制性标准是指具有法律属性,在一定范围内通过法律、行政法规等强制手段加以实施的标准。包括强制性的国家标准、行业标准和地方标准。 推荐性标准又称非强制性标准或自愿性标准,是指生产、交换和使用等
A. wrapped them in dry grass and went on B. wrapped them in dry grass and took them with him C. tried to find the bird D. made the bird fly off 参考答案:B 答案解析:解析:从文章第二段第三句“They were a kind that I did not have in my collection,so I placed them carefully in my