首页 试题详情
单选题

_______ is the main source of lift.

AThe difference in pressure between the upper and lower surfaces of the wing

BThe difference in curvature between the upper and lower surfaces of the wing

CThe curvature on the upper portion of the wing

DThe curvature on the lower portion of the wing

正确答案:A (备注:此答案有误)

相似试题

  • 单选题

    _______ is the main source of lift.

    答案解析

  • 单选题

    We all know that the front door is the main _______ to the house.

    答案解析

  • 单选题

    The main idea of the first paragraph is that ___.

    答案解析

  • 单选题

    The main objective of ISM Code is not ____.

    答案解析

  • 多选题

    听力原文:Q: What is the main idea of this passage? What is the main idea of this passage?A

    答案解析

热门题库