题干

如图所示是一款某品牌不倒翁无人机,它是一款全方位保护的无人机,市面上的大多无人机无螺旋桨保护,螺旋桨易损坏,或者有保护却在坠落情况下起不了作用。产品设计时,以下因素不需要考虑的是(   )

A:抗风风叶的材质

B:风叶保护罩的材质

C:风叶保护罩的尺寸

D:使用者的身高

上一题 下一题 0.0难度 选择题 更新时间:2018-05-01 07:02:21

答案(点此获取答案解析)

D

同类题2

阅读下面四篇短文,从每题所给的A、B、C、D四个选项中选出最佳选项。

    The British government has started a£10- million Mandarin(普通话) Excellence Program. The program will see over 5,000 British students towards fluency(流利) in Mandarin Chinese by 2020.

    The program is led by local schools and supported by University College London. So far, 14 schools have taken part in the program.

    Hundreds of secondary school pupils in England have been taking lessons in Mandarin Chinese. Over the next three years, they will spend eight hours studying Mandarin Chinese every week.

    Nick Gibb is an officer of the British government. He said a high level of fluency in Mandarin Chinese would become more and more important. "Language skills are important for jobs and life in the global(* B)race. Mandarin Chinese is the most widely-spoken language in the world. It is one of the languages that matters the most to our country's future development. If the United Kingdom wants to remain competitive on the world stage, we do need far more of our young people leaving school with a good command of Mandarin Chinese, "Gibb added. "We hope that our young people could be given the chance to study the language. We want them to be fluent in both spoken and written Mandarin. The Mandarin Excellence Program will help us do this. It will not only broaden the students' minds, but give them a great advantage when they enter the world of work as well."

    British kids, in fact, are not alone. In America, about 200,000 students have been studying Mandarin Chinese. It is supposed that 800, 000 more will join them over the next couple of years.