题目内容 (请给出正确答案)
提问人:网友c********1 发布时间:2022年6月13日 23:43
[单项选择题]

下列泡沫液中,有效期仅为1~2年的是()。

A.水成膜泡沫液

B.高倍数泡沫液

C.抗溶性泡沫液

D.氟蛋白泡沫液

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It was within the computer age that the term" information society" began to be widely used to describe the (17) within which we now live. The communications revolution has (18) both work and leisure and how we think and feel both about place and time, but there have been (19) views about its economic, political, social and cultural implications. "Benefits" have been weighed (20) "harmful" outcomes. And generalizations have proved difficult.
 
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