Question

In aerospace devices the weight of the necessary power producing equipment is _____.

A. vital    B. possible    C. capable    D. reliable

Answer 1

A

解析:

vital 極其重要的。本題譯文：在航空航天裝置中必要的動(dòng)力設(shè)備的重量問(wèn)題是至關(guān)緊要的。