usefulness的例句（usefulness在句子中的用法）

• He has outlived his usefulness. 他已老而无用了。
• The theory is of limited usefulness. 这个理论用途有限。
• The report is of potential usefulness to the government. 这个报告可能对政府有用。
• The advisory group has outlived its usefulness. 顾问组已失去了它的作用。
• Badly written questions limit the usefulness of questionnaires. 问题设计得不好,调查问卷的用途就会打折扣.
• I was persuaded of the usefulness of his new device. 我相信了他的新装置的实用性.
• There are doubts about the usefulness of these tests. 这些试验是否有用，人们有所保留。
• Usefulness includes the fact the negatives have been calibrated. 所谓有用,是指在底片上要有标度.
• Objective To evaluate the usefulness of MR cisternography in epidermoids of the cerebellopontine angle angle. 目的评价磁共振脑池成像在桥小脑角上皮样囊肿中的作用.
• The index adds appreciably to the usefulness of the book. 索引明显地增加了这本书的实用价值.
• The attitude of the parents toward the usefulness of what is learned must colour the way children approach school. 父母对学知识是否有用的态度必定会影响孩子对待学业的态度。